• FluTrackers.com Inc. does not provide medical advice. Information on this web site is collected from various internet resources, and the FluTrackers board of directors makes no warranty to the safety, efficacy, correctness or completeness of the information posted on this site by any author or poster. The information collated here is for instructional and/or discussion purposes only and is NOT intended to diagnose or treat any disease, illness, or other medical condition. Every individual reader or poster should seek advice from their personal physician/healthcare practitioner before considering or using any interventions that are discussed on this website. By continuing to access this website you agree to consult your personal physican before using any interventions posted on this website, and you agree to hold harmless FluTrackers.com Inc., the board of directors, the members, and all authors and posters for any effects from use of any medication, supplement, vitamin or other substance, device, intervention, etc. mentioned in posts on this website, or other internet venues referenced in posts on this website.
  • We are not asking for any donations. Do not donate to any entity who says they are raising funds for us.

Canada FluWatch Weekly Reports 2011-2012 Season Weeks 33-34

Pathfinder

Pathfinder

Editor, Senior Moderator
Posted 2011-09-16


Overall Influenza Summary
  • Week 35 marks the beginning of the influenza surveillance season for 2011-12; influenza activity continues at low inter-seasonal levels. In weeks 35 and 36, only 6 laboratory detections of influenza were reported; two regions in Quebec and one region in Alberta reported sporadic influenza activity; and the ILI consultation rate remained low.
  • Other respiratory viruses continue to circulate at low levels.
<!-- END Menu container | FIN de conteneur du menu -->Note: Weekly FluWatch reports will resume on 21 October 2011 (week 41) <!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->

Influenza Activity and Outbreaks

In week 35, two regions in Quebec reported sporadic influenza activity. In week 36, one region in Alberta reported sporadic activity. Saskatchewan and Prince Edward Island have not yet started reporting for the 2011-2012 season (see Activity level Map). No new outbreaks of influenza or ILI were reported in weeks 35 or 36.

Map of overall Influenza activity level by province and territory, Canada, Week 36





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w36-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w36-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate was 6.1 and 3.8 consultations per 1,000 patient visits in weeks 35 and 36, respectively, which is within the expected levels for this time of year (see ILI graph). In both weeks, the highest consultation rate was observed among children under 5 years of age.
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w36-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
Only 6 detections of influenza were reported across Canada in weeks 35 and 36, one pH1N1 2009 (AB), 3 unsubtyped influenza A (QC), and 2 influenza B (QC). The proportion of tests positive for influenza was 0.5% in week 35 and 0.2% in week 36 (see Influenza tests graph). No detailed case-based laboratory reporting has been received for the 2011-12 season (week 35 & 36) (see Tests detailed table). During week 36, detections of other respiratory viruses continued at low levels: 0.5% of tests for respiratory syncytial virus (RSV) were positive, 3.1% for parainfluenza, and 1.9% for adenovirus (see Respiratory Viruses graph). Rhinovirus detections continued to decline from the peak in mid-July, and in week 36 20.0% of tests were positive. For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(August 28 to September 10, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to September 10, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)* </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD id=ar13 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC </TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">0 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB </TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">1 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">0 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK </TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">0 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB </TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">0 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON </TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC </TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">3 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">3 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">3 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">3 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">1 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB </TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">0 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS </TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE </TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL </TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">1 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">4 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">1 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">3 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">2 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">4 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">3 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">2 </TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups </TH><TH id=bc1 colSpan=5>Weekly
(August 28 to September 10, 2011)
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to September 10, 2011)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A </TH><TH id=bc7 headers=bc1>B </TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A </TH><TH id=bc14 headers=bc8>B </TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total </TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1 </TH><TH id=bc5 headers="bc1 bc2">A/H3N2 </TH><TH id=bc6 headers="bc1 bc2">A unsubtyped </TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total </TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1 </TH><TH id=bc12 headers="bc8 bc9">A/H3N2 </TH><TH id=bc13 headers="bc8 bc9">A unsubtyped </TH><TH headers="bc8 bc14">Total </TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc14">0 </TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc14">0 </TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc14">0 </TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc14">0 </TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc14">0 </TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc14">0 </TD></TR></TBODY></TABLE>

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w36-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w36-fg5-eng.gif

Text Equivalent
Antigenic Characterization and Antiviral Resistance
In weeks 35 and 36, the National Microbiology Laboratory (NML) has not reported any antigenic characterization or antiviral resistance data.
Severe Illness Surveillance

In weeks 35 and 36, no paediatric (>16 years of age) hospitalizations with laboratory-confirmed influenza were reported through the Immunization Monitoring Program Active (IMPACT) network.

...
http://www.phac-aspc.gc.ca/fluwatch/11-12/w36_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Weeks 37-38

Re: Canada FluWatch Weekly Reports 2011-2012 Season Weeks 37-38

September 11 to September 24 2011 (Weeks 37 and 38)


Posted 2011-09-30


Overall Influenza Summary
  • Influenza activity continues at low inter-seasonal levels. In weeks 37 and 38, only 4 laboratory detections of influenza were reported; three regions in Quebec and British Columbia reported sporadic influenza activity; and the ILI consultation rate remained low.
  • There was an increase in detections of rhinovirus in weeks 37 and 38.
<!-- END Menu container | FIN de conteneur du menu -->Note: Weekly FluWatch reports will resume on 21 October 2011 (week 41) <!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->
Influenza Activity and Outbreaks

In week 37, one region in Quebec and one in British Columbia reported sporadic influenza activity. In week 38, a different region in BC reported sporadic activity. Saskatchewan has not yet started reporting for the 2011-2012 season (see Activity level Map). No new outbreaks of influenza or ILI were reported in weeks 37 or 38.
Map of overall Influenza activity level by province and territory, Canada, Week 38





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w38-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w38-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate was 7.7 and 11.0 consultations per 1,000 patient visits in weeks 37 and 38 respectively, which is within or below the expected levels for this time of year (see ILI graph). In both weeks, the highest consultation rate was observed among children under 5 years of age.
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w38-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
Only 4 detections of influenza were reported across Canada in weeks 37 and 38, one A/H3N2 (BC), one unsubtyped influenza A (QC), and 2 influenza B (BC and AB). The proportion of tests positive for influenza was 0.3% in week 37 and 0.1% in week 38 (see Influenza tests graph). No detailed case-based laboratory reporting has yet been received for the 2011-12 season (see Tests detailed table). During week 38, detections of other respiratory viruses continued at low levels: 0.7% of tests for respiratory syncytial virus (RSV) were positive, 2.1% for parainfluenza, and 0.8% for adenovirus (see Respiratory Viruses graph). Detections of rhinovirus increased to 24.8% of tests positive in week 37 and 20.4% in week 38, which is near the peak levels observed in early July. For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(September 11 to September 24, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to September 24, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)* </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC </TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">1 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">1 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">1 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">1 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB </TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK </TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">0 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB </TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">0 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON </TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC </TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">1 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">4 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">4 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">1 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB </TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">0 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS </TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE </TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL </TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">2</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">2</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">6</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">4</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">3</TD></TR></TBODY></TABLE>

<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups </TH><TH id=bc1 colSpan=5>Weekly
(September 11 to September 24, 2011)
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to September 24, 2011)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A </TH><TH id=bc7 headers=bc1>B </TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A </TH><TH id=bc14 headers=bc8>B </TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total </TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1 </TH><TH id=bc5 headers="bc1 bc2">A/H3N2 </TH><TH id=bc6 headers="bc1 bc2">A unsubtyped </TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total </TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1 </TH><TH id=bc12 headers="bc8 bc9">A/H3N2 </TH><TH id=bc13 headers="bc8 bc9">A unsubtyped </TH><TH headers="bc8 bc14">Total </TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc14">0 </TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc14">0 </TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc14">0 </TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc14">0 </TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc14">0 </TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc14">0 </TD></TR></TBODY></TABLE>

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w38-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w38-fg5-eng.gif

Text Equivalent
Antigenic Characterization and Antiviral Resistance
In weeks 37 and 38, the National Microbiology Laboratory (NML) has not reported any antigenic characterization or antiviral resistance data.
Severe Illness Surveillance

In weeks 37 and 38, no paediatric (>16 years of age) hospitalizations with laboratory-confirmed influenza were reported through the Immunization Monitoring Program Active (IMPACT) network.

...
http://www.phac-aspc.gc.ca/fluwatch/11-12/w38_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Weeks 39-40

Re: Canada FluWatch Weekly Reports 2011-2012 Season Weeks 39-40

September 25 to October 8 2011 (Weeks 39 and 40)


Posted 2011-10-14
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
Icons-PDF.gif
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w40_11/pdf/fw2011-40-eng.pdf" jQuery1318626328641="2"><ABBR title="Portable Document Format">PDF</ABBR> Version (113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)
>> Help with PDF documents

<HR>Overall Influenza Summary
  • Influenza activity continues at low inter-seasonal levels. In weeks 39 and 40, only 6 laboratory detections of influenza were reported; three regions (one each) in Quebec, Ontario and British Columbia reported sporadic influenza activity.
  • The ILI consultation rate was above the expected range for week 39.
  • There has been an increase in detections of rhinovirus and parainfluenza in weeks 39 and 40.
<!-- END Menu container | FIN de conteneur du menu -->Note: Weekly FluWatch reports will resume on 21 October 2011 (week 41) <!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->
Influenza Activity and Outbreaks

In week 39, one region in Quebec and one in Ontario reported sporadic influenza activity. In week 40, one region in BC reported sporadic activity. Saskatchewan has not yet started reporting for the 2011-2012 season (see Activity level Map). No new outbreaks of influenza or ILI were reported in weeks 39 or 40.
Map of overall Influenza activity level by province and territory, Canada, Week 40





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w40-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w40-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate was 20.4 and 18.6 consultations per 1,000 patient visits in weeks 39 and 40 respectively, which is above or within the expected levels for this time of year (see ILI graph). In week 39, the highest consultation rate was observed among children under 5 years of age (37.4 / 1,000 visits). In week 40, the highest consultation rate was observed among children 5 to 19 years of age (40.5 / 1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w40-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
Only 6 detections of influenza were reported across Canada in weeks 39 and 40, four A/H3N2 (BC(3) and ON(1)), one unsubtyped influenza A (AB), and one influenza B (QC). The proportion of tests positive for influenza was 0.1% in week 39 and 0.3% in week 40 (see Influenza tests graph). Very few reports of detailed case-based laboratory reporting have been received for the 2011-12 season (the table of cases by age will be updated when m10 cases are received). During weeks 39 and 40, detections of parainfluenza increased to 5.6% of tests positive. Other respiratory viruses continued to circulate at low levels: 0.7% of tests for respiratory syncytial virus (RSV) were positive, 1.0% for adenovirus, 1.3% for human metapneumovirus (hMPV), and 0.2% for coronavirus (see Respiratory Viruses graph). Detections of rhinovirus increased to 32.4% of tests positive in week 39 and 25.1% in week 40, which is above the recent peak levels observed in early July. For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(September 25 to October 8, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to October 8, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)* </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC </TH><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac3">3 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac5">3 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac11">4 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac13">4</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac16">1 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB </TH><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac3">1 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac7">1 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac11">2 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac14">1 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac15">1 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac16">1 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK </TH><TD class=alignCenter headers="ar1 ar4 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar4 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar4 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar4 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac10 ac11">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac16">0 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB </TH><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac11">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac16">0 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON </TH><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac3">1 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac5">1 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac11">1 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac13">1 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac16">0 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC </TH><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac8">1 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac11">4 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac15">4 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac16">2 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB </TH><TD class=alignCenter headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignCenter headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar8 ac9 ac16">0 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS </TH><TD class=alignCenter headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignCenter headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE </TH><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL </TH><TD class=alignCenter headers="ar1 ar11 ac1 ac2 ac3">0 </TD><TD class=alignCenter headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar11 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignCenter headers="ar1 ar11 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac11">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac13">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac16">0 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac3">5</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac5">4</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac6">0</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac7">1</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac8">1</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac11">11</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac13">5</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac14">1</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac15">5</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac16">4</TD></TR></TBODY></TABLE>

<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups </TH><TH id=bc1 colSpan=5>Weekly
(September 25 to October 8, 2011)
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to October 8, 2011)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A </TH><TH id=bc7 headers=bc1>B </TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A </TH><TH id=bc14 headers=bc8>B </TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total </TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1 </TH><TH id=bc5 headers="bc1 bc2">A/H3N2 </TH><TH id=bc6 headers="bc1 bc2">A unsubtyped </TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total </TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1 </TH><TH id=bc12 headers="bc8 bc9">A/H3N2 </TH><TH id=bc13 headers="bc8 bc9">A unsubtyped </TH><TH headers="bc8 bc14">Total </TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignCenter headers="br1 br2 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br2 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br2 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br2 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br2 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br2 bc8 bc14">0 </TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignCenter headers="br1 br3 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br3 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br3 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc14">0 </TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignCenter headers="br1 br4 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br4 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br4 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br4 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br4 bc8 bc14">0 </TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignCenter headers="br1 br5 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br5 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br5 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br5 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br5 bc8 bc14">0 </TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignCenter headers="br1 br6 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br6 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br6 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br6 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br6 bc8 bc14">0 </TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignCenter headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br7 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignCenter headers="br1 br8 bc1 bc2 bc3">0 </TD><TD class=alignCenter headers="br1 br8 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br8 bc1 bc2 bc5">0 </TD><TD class=alignCenter headers="br1 br8 bc1 bc2 bc6">0 </TD><TD class=alignCenter headers="br1 br8 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc10">0 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc12">0 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br8 bc8 bc14">0 </TD></TR></TBODY></TABLE>

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w40-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w40-fg5-eng.gif

Text Equivalent

...
http://www.phac-aspc.gc.ca/fluwatch/11-12/w40_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 41

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 41

October 9 to October 15 2011 (Week 41)


Posted 2011-10-21
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
Icons-PDF.gif
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w41_11/pdf/fw2011-41-eng.pdf" jQuery1319235082451="2"><ABBR title="Portable Document Format">PDF</ABBR> Version (113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)
>> Help with PDF documents

<HR>Overall Influenza Summary
  • Influenza activity continues at low inter-seasonal levels
  • In week 41, 3 laboratory detections of influenza were reported
  • Only two regions reported sporadic influenza activity (in BC & QC)
  • The ILI consultation rate was below the expected range for this week
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity and Outbreaks

In week 41, two regions reported sporadic influenza activity (in BC & QC). No data were received from regions in SK, YT and the Northwest region of ON this week (see Activity level Map). No outbreaks of influenza or ILI have been reported since the start of the season.
Map of overall Influenza activity level by province and territory, Canada, Week 41





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w41-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w41-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate was 11.2 consultations per 1,000 patient visits in week 41 which is below the expected levels for this time of year (see ILI graph). The highest consultation rate this week was observed among children under 5 years of age (36.7 / 1,000 visits); however, in the past three weeks the highest consultation rates were observed in children under 5 and those 5 to 19 years of age (range: 29.0 to 47.7/1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w41-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
In week 41, 1,431 influenza tests were conducted of which 3 (0.2%) were positive for influenza. Of the positive detections, two were A(H3N2) (from BC) and one was unsubtyped influenza A (QC). The proportion of tests positive for influenza was similar to the last two weeks. Detailed information on age and subtype were received from three cases this season to date. All three cases were between the ages of 20-44 years. One case was due to A(H1N1)pdm09 and the other two were unsubtyped influenza A.
In week 41, the proportion of tests positive for parainfluenza (5.5%) and rhinoviruses (24.6%) remained similar to the previous week. The proportion of positive tests for the other respiratory viruses remained low (RSV-1.5%; adenovirus-2.2%; hMPV-0.9%; coronavirus-0.2%) (see Respiratory Viruses graph). For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
(October 9 to October 15, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to October 15, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>B</TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>B</TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total</TH><TH id=ac4 headers="ac1 ac2">A(H1)</TH><TH id=ac5 headers="ac1 ac2">A(H3)</TH><TH id=ac6 headers="ac1 ac2">Pand H1N1</TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)*</TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers="ac9 ac10">A Total</TH><TH id=ac12 headers="ac9 ac10">A(H1)</TH><TH id=ac13 headers="ac9 ac10">A(H3)</TH><TH id=ac14 headers="ac9 ac10">Pand H1N1</TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)*</TH><TH headers="ac9 ac16">Total</TH></TR></THEAD><TFOOT><TR><TD id=c_tar1 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC</TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">2</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">2</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">6</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">6</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">1</TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB</TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">2</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">1</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">1</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1</TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK</TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">0</TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB</TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">0</TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON</TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">1</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">1</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0</TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC</TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">1</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">5</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">5</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">2</TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB</TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">0</TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS</TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0</TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE</TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0</TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL</TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">3</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">2</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">14</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">7</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">6</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">4</TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
(October 9 to October 15, 2011)
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to October 15, 2011)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A</TH><TH id=bc7 headers=bc1>B</TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A</TH><TH id=bc14 headers=bc8>B</TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total</TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1</TH><TH id=bc5 headers="bc1 bc2">A/H3N2</TH><TH id=bc6 headers="bc1 bc2">A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers="bc8 bc9">A Total</TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1</TH><TH id=bc12 headers="bc8 bc9">A/H3N2</TH><TH id=bc13 headers="bc8 bc9">A unsubtyped</TH><TH headers="bc8 bc14">Total</TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br2 bc1 bc7">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br2 bc8 bc14">0</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br3 bc1 bc7">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br3 bc8 bc14">0</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">1</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">1</TD><TD class=alignRight headers="br1 br4 bc1 bc7">0</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">3</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">2</TD><TD class=alignRight headers="br1 br4 bc8 bc14">0</TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br5 bc1 bc7">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br5 bc8 bc14">0</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br6 bc1 bc7">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br6 bc8 bc14">0</TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br7 bc1 bc7">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br7 bc8 bc14">0</TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">1</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">1</TD><TD class=alignRight headers="br1 br8 bc1 bc7">0</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">3</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">2</TD><TD class=alignRight headers="br1 br8 bc8 bc14">0</TD></TR></TBODY></TABLE>

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w41-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w41-fg5-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w41_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 42

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 42

October 16 to October 22 2011 (Week 42)


Posted 2011-10-28
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing: <A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w42_11/pdf/fw2011-42-eng.pdf" jQuery1319837224212="2"><ABBR title="Portable Document Format">PDF</ABBR> Version
Icons-PDF.gif
(113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)
>> Help with PDF documents

<HR>Overall Influenza Summary
  • Influenza activity continues at low inter-seasonal levels
  • In week 42, 4 laboratory detections of influenza were reported
  • Only two regions reported sporadic influenza activity (in YT & QC)
  • The ILI consultation rate increased slightly but is within the expected range for this week
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity and Outbreaks

In week 42, two regions reported sporadic influenza activity (in YT & QC). No data was received from SK this week (see Activity level Map). No outbreaks of influenza or ILI have been reported since the start of the season.
Map of overall Influenza activity level by province and territory, Canada, Week 42





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w42-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w42-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate increased slightly to 13.8 consultations per 1,000 patient visits in week 42 which is within the expected levels for this time of year (see ILI graph). The highest consultation rate this week was observed among those 5 to 19 years of age (35.1 / 1,000 visits) followed by children under 5 (19.8/1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w42-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
In week 42, 1,844 influenza tests were conducted of which 4 (0.2%) were positive for influenza. Of the positive detections, three were A(H3N2) (from BC) and one was unsubtyped influenza A (QC). The proportion of tests positive for influenza has been similar over the last three weeks. Detailed information on age and subtype were received from three cases this season to date. All three cases were between the ages of 20-44 years. One case was due to A(H1N1)pdm09 and the other two were unsubtyped influenza A.
In week 42, the proportion of tests positive for parainfluenza (6.2%) and rhinoviruses (24.6%) remained similar to previous weeks. The proportion of positive tests for the other respiratory viruses remained low (RSV-1.3%; adenovirus-2.5%; hMPV-0.7%; coronavirus-0.0%) (see Respiratory Viruses graph). For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(October 16 to October 22, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to October 22, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)* </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD id=c_tar1 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC </TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">3 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">3 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">9 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">9 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">1 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB </TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">2 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK </TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">0 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB </TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">0 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON </TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">1 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">1 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC </TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">1 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">6 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">5 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">2 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB </TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">0 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS </TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE </TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL </TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">4 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">3 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">1 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">18 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">10 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">2 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">6 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">4 </TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups

reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups </TH><TH id=bc1 colSpan=5>Weekly br> (October 16 to October 22, 2011) </TH><TH id=bc8 colSpan=5>Cumulative br> (Aug. 29, 2010 to October 22, 2011) </TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A </TH><TH id=bc7 headers=bc1>B </TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A </TH><TH id=bc14 headers=bc8>B </TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total </TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1 </TH><TH id=bc5 headers="bc1 bc2">A/H3N2 </TH><TH id=bc6 headers="bc1 bc2">A unsubtyped </TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total </TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1 </TH><TH id=bc12 headers="bc8 bc9">A/H3N2 </TH><TH id=bc13 headers="bc8 bc9">A unsubtyped </TH><TD headers="bc8 bc14">Total </TD></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5 </TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc14">0 </TD></TR><TR><TH id=br3 headers=br1>5-19 </TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc14">0 </TD></TR><TR><TH id=br4 headers=br1>20-44 </TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">3 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">1 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">2 </TD><TD class=alignRight headers="br1 br4 bc8 bc14">0 </TD></TR><TR><TH id=br5 headers=br1>45-64 </TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc14">0 </TD></TR><TR><TH id=br6 headers=br1>65+ </TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc14">0 </TD></TR><TR><TH id=br7 headers=br1>Unknown </TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total </TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">3 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">1 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">2 </TD><TD class=alignRight headers="br1 br8 bc8 bc14">0 </TD></TR></TBODY></TABLE>

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w42-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w42-fg5-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w42_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 43

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 43

October 23 to October 29 2011 (Week 43)

Posted 2011-11-04
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing: <A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w43_11/pdf/fw2011-43-eng.pdf" jQuery1320439976985="2"><ABBR title="Portable Document Format">PDF</ABBR> Version
Icons-PDF.gif
(113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)
>> Help with PDF documents

<HR>Overall Influenza Summary
  • Influenza activity continues at low inter-seasonal levels
  • In week 43, 3 laboratory detections of influenza were reported (1 H3 and 2 B)
  • Only four regions reported sporadic influenza activity (in BC, ON & QC)
  • The ILI consultation rate increased to slightly above the expected range for this week but still remains low
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->NOTE: The next FluWatch report (week 44) will be published on Monday, November 14, 2011.
Influenza Activity and Outbreaks

In week 43, four regions within provinces reported sporadic influenza activity (in BC, ON & QC) (see Activity level Map). No influenza outbreaks have been reported since the start of the season.
Map of overall Influenza activity level by province and territory, Canada, Week 43





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w43-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w43-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate increased to 22.7 consultations per 1,000 patient visits in week 43 which is slightly above expected levels for this time of year (see ILI graph). Note that the proportion of tests positive for rhinoviruses is much higher compared to the percent positive for other respiratory viruses (including influenza) over the past several weeks. The highest consultation rate this week was observed among children under 5 (49.8 / 1,000 visits) followed by those 5 to 19 years of age (36.4/1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w43-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
In week 43, 1,886 influenza tests were conducted of which 3 (0.2%) were positive for influenza. Of the positive detections, there was one A(H3N2) virus (from BC) and two B viruses (from BC & QC). The proportion of tests positive for influenza has remained below 0.2% since the beginning of September 2011.
In week 43, the proportion of tests positive for parainfluenza (5.9%) and rhinoviruses (20.0%) declined slightly but remains similar to previous weeks. The proportion of positive tests for the other respiratory viruses remained low (RSV-1.8%; adenovirus-3.0%; hMPV-1.4%; coronavirus-0.4%) (see Respiratory Viruses graph). For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(October 23 to October 29, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to October 29, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)* </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD id=c_tar1 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC </TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">1</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">10 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">10 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">2 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB </TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">2 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK </TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">0 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB </TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">0 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON </TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">1 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">1 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC </TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">11 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">10 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">5 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB </TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">0 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS </TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE </TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL </TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">2 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">24 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">11 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">2 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">11 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">8 </TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups </TH><TH id=bc1 colSpan=5>Weekly
(October 23 to October 29, 2011)
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to October 29, 2011)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A </TH><TH id=bc7 headers=bc1>B </TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A </TH><TH id=bc14 headers=bc8>B </TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total </TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1 </TH><TH id=bc5 headers="bc1 bc2">A/H3N2 </TH><TH id=bc6 headers="bc1 bc2">A unsubtyped </TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total </TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1 </TH><TH id=bc12 headers="bc8 bc9">A/H3N2 </TH><TH id=bc13 headers="bc8 bc9">A unsubtyped </TH><TH headers="bc8 bc14">Total </TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5 </TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br2 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br2 bc8 bc14">0 </TD></TR><TR><TH id=br3 headers=br1>5-19 </TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br3 bc8 bc14">0 </TD></TR><TR><TH id=br4 headers=br1>20-44 </TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">3 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">1 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">2 </TD><TD class=alignRight headers="br1 br4 bc8 bc14">0 </TD></TR><TR><TH id=br5 headers=br1>45-64 </TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br5 bc8 bc14">0 </TD></TR><TR><TH id=br6 headers=br1>65+ </TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br6 bc8 bc14">0 </TD></TR><TR><TH id=br7 headers=br1>Unknown </TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total </TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br8 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">3 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">1 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">2 </TD><TD class=alignRight headers="br1 br8 bc8 bc14">0 </TD></TR></TBODY></TABLE>
Detailed information on age and subtype were received on three cases this season to date. All three cases were between the ages of 20-44 years. One case was due to A(H1N1)pdm09 and the other two were unsubtyped influenza A.

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w43-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w43-fg5-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w43_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 44

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 44

October 30 to November 5 2011 (Week 44)

Posted 2011-11-14
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing: <A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w44_11/pdf/fw2011-44-eng.pdf" jQuery1321324887942="2"><ABBR title="Portable Document Format">PDF</ABBR> Version
Icons-PDF.gif
(113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)
>> Help with PDF documents

<HR>Overall Influenza Summary
  • Influenza activity is increasing in some regions (AB, BC & QC) but remains low in the rest of the country
  • One region (in Calgary, AB) reported localized influenza activity; five regions reported sporadic influenza activity (in BC, AB & QC)
  • In week 44, 8 laboratory detections of influenza were reported (7 A/H3 and 1 B)
  • One laboratory-confirmed influenza outbreak (due to A/H3 virus) was reported in a seniors lodge
  • Two influenza-associated paediatric hospitalizations were reported from BC
  • The national ILI consultation rate remains low
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity and Outbreaks

In week 44, one surveillance region (Calgary, AB) reported localized influenza activity and five surveillance regions within provinces (in BC, AB and QC) reported sporadic influenza activity. No data was received from regions in Nova Scotia this week (see Activity level Map).
One laboratory-confirmed influenza outbreak (due to influenza A/H3 virus) was reported in a seniors lodge in Calgary, AB in week 44. It is the first outbreak due to influenza reported this season.
Map of overall Influenza activity level by province and territory, Canada, Week 44





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif



Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent

Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w44-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w44-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate increased slightly to 24.1 consultations per 1,000 patient visits in week 44 which is within the expected levels for this time of year (see ILI graph). The highest consultation rate this week was observed among those 5 to 19 years of age (35.9 / 1,000 visits) followed by children under 5 (27.6/1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w44-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
In week 44, 1,788 influenza tests were conducted of which 8 (0.4%) were positive for influenza. Of the positive detections, there were seven (87.5% or 7/8) A(H3) viruses (from BC, AB & ON) and one (12.5% or 1/8) B virus (from QC). Although the proportion of tests positive for influenza increased slightly this week compared to previous weeks, the proportion is still low and has remained below 0.4% since the beginning of this season.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 77.5% influenza A (58% - A(H3); 6.5% - A(H1N1)pdm09; 35.5% - unsubtyped) and 22.5% influenza B.
In week 44, the proportion of tests positive for rhinoviruses (15.8%) continued to decline while the proportion of parainfluenza virus detections increased (7.3%). The proportion of positive tests for the other respiratory viruses remained low (RSV-2.1%; adenovirus-3.2%; hMPV-1.3%; coronavirus-0.5%) (see Respiratory Viruses graph). For more details of weekly respiratory virus detections in Canada, see http://www.phac-aspc.gc.ca/bid-bmi/dsd-dsm/rvdi-divr/index-eng.php.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
(October 30 to November 5, 2011)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to November 5, 2011)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>B</TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>B</TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total</TH><TH id=ac4 headers="ac1 ac2">A(H1)</TH><TH id=ac5 headers="ac1 ac2">A(H3)</TH><TH id=ac6 headers="ac1 ac2">Pand H1N1</TH><TH id=ac7 class=noWrap headers="ac1 ac2">A (Un S)*</TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers="ac9 ac10">A Total</TH><TH id=ac12 headers="ac9 ac10">A(H1)</TH><TH id=ac13 headers="ac9 ac10">A(H3)</TH><TH id=ac14 headers="ac9 ac10">Pand H1N1</TH><TH id=ac15 class=noWrap headers="ac9 ac10">A (Un S)*</TH><TH headers="ac9 ac16">Total</TH></TR></THEAD><TFOOT><TR><TD id=c_tar1 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1>BC</TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">1</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">1</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">11</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">11</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">2</TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1>AB</TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">5</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">5</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">7</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">5</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">1</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">1</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1</TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1>SK</TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">0</TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1>MB</TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">0</TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1>ON</TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">1</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">1</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">2</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">2</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0</TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1>QC</TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">11</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">1</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">10</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">6</TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1>NB</TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">0</TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1>NS</TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0</TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1>PE</TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0</TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1>NL</TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">7</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">7</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">31</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">18</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">2</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">11</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">9</TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
(October 30 to November 5, 2011)
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to November 5, 2011)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A</TH><TH id=bc7 headers=bc1>B</TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A</TH><TH id=bc14 headers=bc8>B</TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total</TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1</TH><TH id=bc5 headers="bc1 bc2">A/H3N2</TH><TH id=bc6 headers="bc1 bc2">A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers="bc8 bc9">A Total</TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1</TH><TH id=bc12 headers="bc8 bc9">A/H3N2</TH><TH id=bc13 headers="bc8 bc9">A unsubtyped</TH><TH headers="bc8 bc14">Total</TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">2</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">2</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br2 bc1 bc7">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">2</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">2</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br2 bc8 bc14">0</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br3 bc1 bc7">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br3 bc8 bc14">0</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br4 bc1 bc7">0</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">3</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">1</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">1</TD><TD class=alignRight headers="br1 br4 bc8 bc14">1</TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br5 bc1 bc7">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br5 bc8 bc14">0</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">2</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">2</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br6 bc1 bc7">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">2</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">2</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br6 bc8 bc14">0</TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br7 bc1 bc7">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br7 bc8 bc14">0</TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">4</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">4</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br8 bc1 bc7">0</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">7</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">5</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">1</TD><TD class=alignRight headers="br1 br8 bc8 bc14">1</TD></TR></TBODY></TABLE>
Detailed information on age and subtype were received on eight cases this season to date. The proportions of cases by age group are as follows: 25.0% were < 5 years; 50.0% were between 20-44 years of age; and 25.0% were >= 65 years.

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w44-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w44-fg5-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w44_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 45

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 45

November 6 to November 12 2011 (Week 45)

Posted 2011-11-18
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w45_11/pdf/fw2011-45-eng.pdf" jQuery1321653075009="2">2011-2012 FluWatch: November 6 to November 12 2011 (Week 45) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity continues to increase in some regions (<ABBR title=Alberta>AB</ABBR>, <ABBR title="British Columbia ">BC</ABBR>, <ABBR title=Ontario>ON</ABBR> & <ABBR title=Quebec>QC</ABBR>) but remains low in the rest of the country
  • One region (in North region of AB) reported localized influenza activity; six regions reported sporadic influenza activity (within BC, AB, ON & QC)
  • In week 45, 11 laboratory detections of influenza were reported (7 A/H3, 2 A unsubtyped and 2 B)
  • Two influenza-associated paediatric hospitalizations were reported from BC & AB
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate remains low
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity and Outbreaks

In week 45, one surveillance region (North region of AB) reported localized influenza activity and six surveillance regions within BC, AB, ON and QC reported sporadic influenza activity (see Activity level Map).
One ILI outbreak was reported in a school in the North region of AB in week 45. No laboratory tests were conducted at the school; however, influenza detections have been reported in the region.
Map of overall Influenza activity level by province and territory, Canada, Week 45





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent
Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w45-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w45-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate declined slightly to 21.9 consultations per 1,000 patient visits in week 45 which is within the expected levels for this time of year (see ILI graph). The highest consultation rate this week was observed among those 5 to 19 years of age (46.8 / 1,000 visits) followed by children under 5 (40.4/1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w45-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
In week 45, 2,037 influenza tests were conducted of which 11 (0.5%) were positive for influenza. Although the proportion of tests positive for influenza increased slightly this week compared to previous weeks, the proportion is still low and has remained below 0.6% since the beginning of this season.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 79.2% influenza A (62% - A(H3); 4.8% - A(H1N1)pdm09; 33.3% - unsubtyped) and 20.8% influenza B.
In week 45, the proportion of tests positive for rhinoviruses (13.5%) continued to decline. The proportion of positive tests for the other respiratory viruses remained low (RSV-3.0%; parainfluenza-5.7%; adenovirus-4.2%; hMPV-2.3%; coronavirus-0.8%) (see Respiratory Viruses graph). For more details see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(November 6 to November 12, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to November 12, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from <ABBR title=Nunavut>NT</ABBR>, <ABBR title=Yukon>YT</ABBR>, and <ABBR title=Nunavut>NU</ABBR> are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>15</TD><TD class=alignRight>0</TD><TD class=alignRight>15</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>11</TD><TD class=alignRight>0</TD><TD class=alignRight>8</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>13</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>12</TD><TD class=alignRight>8</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD><TD class=alignRight>42</TD><TD class=alignRight>0</TD><TD class=alignRight>26</TD><TD class=alignRight>2</TD><TD class=alignRight>14</TD><TD class=alignRight>11</TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(November 6 to November 12, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to November 12, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>12</TD><TD class=alignRight>1</TD><TD class=alignRight>9</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD></TR></TBODY></TABLE>
Detailed information on age and subtype were received on 13 cases this season to date. The proportions of cases by age group are as follows: 23.0% were < 5 years; 23.0% were between 5-19 years; 30.8% were between 20-44 years of age; and 15.4% were >= 65 years.

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w45-fg4-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w45_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 46

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 46

November 13 to November 19 2011 (Week 46)


Posted 2011-11-25
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w46_11/pdf/fw2011-46-eng.pdf" jQuery1322265569166="2">2011-2012 FluWatch: November 13 to November 19 2011 (Week 46) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada remains low
  • Five regions (within <ABBR title="British Columbia ">BC</ABBR>, <ABBR title=Alberta>AB</ABBR> & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity
  • In week 46, 10 laboratory detections of influenza were reported (3 A/H3, 1 A/H1, 4 A unsubtyped and 2 B)
  • One influenza-associated paediatric hospitalization was reported from QC
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate remains low
Novel Influenza A Virus
  • Limited human-to-human transmission of swine-origin influenza A(H3N2) virus in children in Iowa was reported by the <ABBR title="United States">US</ABBR> <ABBR title="Centers for Disease Control and Prevention">CDC</ABBR>
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity and Outbreaks

In week 46, five surveillance regions within BC, AB, and QC reported sporadic influenza activity (see Activity level Map). No outbreaks of influenza or ILI were reported this week.
Map of overall Influenza activity level by province and territory, Canada, Week 46





No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent
Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)

2011-w46-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent


Top of Page
Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

2011-w46-fg2-eng.gif

Text Equivalent
ILI consultation rate
The national ILI consultation rate declined to 15.7 consultations per 1,000 patient visits in week 46 which is within the expected levels for this time of year (see ILI graph). The highest consultation rate this week was observed in children under 5 (60.1/1,000 visits).
Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2008/09 seasons

2011-w46-fg3-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Laboratory Surveillance Summary
In week 46, 2,337 influenza tests were conducted of which 10 (0.4%) were positive for influenza. The proportion of tests positive for influenza has remained below 0.6% since the beginning of this season.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 79.4% influenza A (60% - A(H3); 6% - A(H1N1)pdm09; 34% - unsubtyped) and 20.6% influenza B.
In week 46, the proportion of tests positive for rhinoviruses (12.4%) continued to decline while the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> has increased in recent weeks (4.4%). The proportion of positive tests for the other respiratory viruses remained low (parainfluenza-6.2%; adenovirus-4.1%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-3.1%; coronavirus-1.0%) (see Respiratory Viruses graph). For more details see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(November 13 to November 19, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to November 19, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from <ABBR title=Nunavut>NT</ABBR>, <ABBR title=Yukon>YT</ABBR>, and <ABBR title=Nunavut>NU</ABBR> are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>18</TD><TD class=alignRight>0</TD><TD class=alignRight>18</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>11</TD><TD class=alignRight>0</TD><TD class=alignRight>9</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>4</TD><TD class=alignRight>1</TD><TD class=alignRight>18</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>16</TD><TD class=alignRight>9</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>8</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>1</TD><TD class=alignRight>4</TD><TD class=alignRight>2</TD><TD class=alignRight>50</TD><TD class=alignRight>0</TD><TD class=alignRight>30</TD><TD class=alignRight>3</TD><TD class=alignRight>17</TD><TD class=alignRight>13</TD></TR></TBODY></TABLE><TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(November 13 to November 19, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to November 19, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD><TD class=alignRight>3</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>8</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD><TD class=alignRight>4</TD><TD class=alignRight>2</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>3</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD><TD class=alignRight>26</TD><TD class=alignRight>3</TD><TD class=alignRight>11</TD><TD class=alignRight>12</TD><TD class=alignRight>9</TD></TR></TBODY></TABLE>
Detailed information on age and subtype were received on 35 cases this season to date. The proportions of cases by age group are as follows: 25.7% were < 5 years; 8.6% were between 5-19 years; 28.6% were between 20-44 years; 14.3% were between 45-64 years of age; and 22.9% were >= 65 years.

Top of Page
Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012

2011-w46-fg4-eng.gif

Text Equivalent
Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

2011-w46-fg5-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w46_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 47

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 47

November 20 to November 26 2011 (Week 47)

Posted 2011-12-02
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w47_11/pdf/fw2011-47-eng.pdf" jQuery1322863479712="2">2011-2012 FluWatch: November 20 to November 26 2011 (Week 47) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada is starting to increase in some regions, but remains low overall
  • 14 regions (within <ABBR title="British Columbia ">BC</ABBR>, <ABBR title="Alberta ">AB</ABBR> <ABBR title=Ontario>ON</ABBR> & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity
  • In week 47, 20 laboratory detections of influenza were reported (11 A/H3, 1 A/H1, 5 A unsubtyped and 3 B)
  • Two adult influenza hospitalizations were reported from AB & ON
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate remains low
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 47, 14 surveillance regions within BC, AB, ON and QC reported sporadic influenza activity (see Figure 1). No outbreaks of influenza or ILI were reported this week (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 47




No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2011-w47-fg1-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2011-w47-fg2-eng.gif

Text Equivalent

Top of Page
Influenza and Other Respiratory Virus Detections

In week 47, 2,107 influenza tests were conducted of which 20 (0.9%) were positive for influenza. The proportion of tests positive for influenza has remained below 1.0% since the beginning of this season (Table 1 and Figure 4).
The proportion of influenza virus detections by type/subtype this season to date is as follows: 81.6% influenza A (66% - A(H3); 6% - A(H1N1)pdm09; 27% - unsubtyped) and 18.4% influenza B (Table 1).
Detailed information on age and subtype were received on 48 cases this season to date (Table 2). The proportions of cases by age group are as follows: 22.9% were < 5 years; 6.3% were between 5-19 years; 29.2% were between 20-44 years; 12.5% were between 45-64 years of age; and 29.2% were >= 65 years.
In week 47, the proportion of tests positive for rhinoviruses (12.5%) and <ABBR title="Human metapneumovirus">hMPV</ABBR> (2.7%) continued to decline. The proportion of positive tests for the other respiratory viruses continued to increase, however the proportions remain low (<ABBR title="respiratory syncytial virus">RSV</ABBR>-4.7%; parainfluenza-7.1%; adenovirus-5.1%; coronavirus-1.4%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(November 20 to November 26, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to November 26, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from <ABBR title=Nunavut>NT</ABBR>, <ABBR title=Yukon>YT</ABBR>, and <ABBR title=Nunavut>NU</ABBR> are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>23</TD><TD class=alignRight>0</TD><TD class=alignRight>23</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>14</TD><TD class=alignRight>0</TD><TD class=alignRight>12</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>1</TD><TD class=alignRight>16</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>14</TD><TD class=alignRight>8</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>17</TD><TD class=alignRight>0</TD><TD class=alignRight>11</TD><TD class=alignRight>1</TD><TD class=alignRight>5</TD><TD class=alignRight>3</TD><TD class=alignRight>62</TD><TD class=alignRight>0</TD><TD class=alignRight>41</TD><TD class=alignRight>4</TD><TD class=alignRight>17</TD><TD class=alignRight>14</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(November 20 to November 26, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to November 26, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>8</TD><TD class=alignRight>1</TD><TD class=alignRight>4</TD><TD class=alignRight>3</TD><TD class=alignRight>3</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>10</TD><TD class=alignRight>2</TD><TD class=alignRight>3</TD><TD class=alignRight>5</TD><TD class=alignRight>4</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>5</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>11</TD><TD class=alignRight>1</TD><TD class=alignRight>6</TD><TD class=alignRight>4</TD><TD class=alignRight>3</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>9</TD><TD class=alignRight>1</TD><TD class=alignRight>5</TD><TD class=alignRight>3</TD><TD class=alignRight>3</TD><TD class=alignRight>36</TD><TD class=alignRight>4</TD><TD class=alignRight>17</TD><TD class=alignRight>15</TD><TD class=alignRight>12</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2011-w47-fg4-eng.gif

Text Equivalent
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2011-w47-fg5-eng.gif

Text Equivalent

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w47_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 48

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 48

November 27 to December 3 2011 (Week 48)

Posted 2011-12-09
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w48_11/pdf/fw2011-48-eng.pdf" jQuery1323468886769="2">2011-2012 FluWatch: November 27 to December 3 2011 (Week 48) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada is starting to increase in more regions compared to previous weeks
  • Three regions (within <ABBR title="British Columbia ">BC</ABBR>, <ABBR title="Alberta ">AB</ABBR>) reported localized influenza activity and eight regions (within BC, AB, <ABBR title=Saskatchewan>SK</ABBR>, <ABBR title=Ontario>ON</ABBR>, <ABBR title=Quebec>QC</ABBR> & <ABBR title="New Brunswick ">NB</ABBR>) reported sporadic influenza activity
  • Three outbreaks of influenza or <ABBR title="Influenza-like illness">ILI</ABBR> were reported this week
  • In week 48, 16 laboratory detections of influenza were reported (9 A/H3, 1 A/H1, 2 A unsubtyped and 4 B)
  • Three influenza hospitalizations were reported this week (2 paediatric and 1 adult)
  • The national ILI consultation rate increased slightly from previous weeks but remains within expected levels
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 48, three surveillance regions (within BC & AB) reported localized activity and 8 regions (within BC, AB, SK, ON, QC & NB) reported sporadic influenza activity (see Figure 1). Three outbreaks of influenza or ILI were reported this week: 1 in a long-term care facility (BC), 1 in a school (AB) and 1 other outbreak (AB) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 48




No Data
leg_dots.gif

No Activity
leg_ffffff.gif

Sporadic Activity
leg_ccccff.gif

Localized Activity
leg_6666ff.gif

Widespread Activity
leg_000066.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2011-w48-fg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2011-w48-fg3-eng.gif

Text Equivalent

Top of Page
Influenza and Other Respiratory Virus Detections

In week 48, 2,428 influenza tests were conducted of which 16 (0.7%) were positive for influenza. The proportion of tests positive for influenza has remained below 1.0% since the beginning of this season (Table 1 and Figure 4).
The proportion of influenza virus detections by type/subtype this season to date is as follows: 80.6% influenza A (68% - A(H3); 7% - A(H1N1)pdm09; 25% - unsubtyped) and 19.4% influenza B (Table 1).
Detailed information on age and subtype were received on 58 cases this season to date (Table 2). The proportions of cases by age group are as follows: 27.6% were < 5 years; 5.2% were between 5-19 years; 29.3% were between 20-44 years; 12.1% were between 45-64 years of age; and 25.9% were ≥ 65 years.
In week 48, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> continued to increase (7.4%). The proportion of positive tests for the other respiratory viruses remained stable or declined from previous weeks (rhinovirus-8.6%; parainfluenza-6.1%; adenovirus-4.6%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-3.7; coronavirus-0.9%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(November 27 to December 3, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to December 3, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from <ABBR title=Nunavut>NT</ABBR>, <ABBR title=Yukon>YT</ABBR>, and <ABBR title=Nunavut>NU</ABBR> are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>28</TD><TD class=alignRight>0</TD><TD class=alignRight>28</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>19</TD><TD class=alignRight>0</TD><TD class=alignRight>16</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>10</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>17</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>15</TD><TD class=alignRight>9</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>9</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>4</TD><TD class=alignRight>75</TD><TD class=alignRight>0</TD><TD class=alignRight>51</TD><TD class=alignRight>5</TD><TD class=alignRight>19</TD><TD class=alignRight>18</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(November 27 to December 3, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to December 3, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>4</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>13</TD><TD class=alignRight>2</TD><TD class=alignRight>7</TD><TD class=alignRight>4</TD><TD class=alignRight>3</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>12</TD><TD class=alignRight>2</TD><TD class=alignRight>4</TD><TD class=alignRight>6</TD><TD class=alignRight>5</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>11</TD><TD class=alignRight>1</TD><TD class=alignRight>6</TD><TD class=alignRight>4</TD><TD class=alignRight>4</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>7</TD><TD class=alignRight>1</TD><TD class=alignRight>4</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD><TD class=alignRight>44</TD><TD class=alignRight>5</TD><TD class=alignRight>22</TD><TD class=alignRight>17</TD><TD class=alignRight>14</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2011-w48-fg4-eng.gif

Text Equivalent
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2011-w48-fg5-eng.gif

Text Equivalent

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 13 influenza viruses (7 A/H3N2, 1 A/H1N1 and 5 B). All seven A/H3N2 viruses (from BC, AB & ON) are antigenically related to A/Perth/16/2009. The A/H1N1 virus (from QC) is antigenically related to A/California/07/2009. Three of the influenza B viruses characterized (from AB & QC) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other two influenza B viruses (from BC) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 13
2011-w48-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008
Text Equivalent

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 13 influenza viruses (seven A/H3N2, one A/H1N1 and five B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 13 viruses were susceptible to oseltamivir and zanamivir. Ten A/H3N2 viruses were tested for amantadine resistance and all 10 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>0 </TD><TD class=alignRight>10</TD><TD class=alignRight>10 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>NA<SUP>* </SUP></TD><TD class=alignRight>NA<SUP>* </SUP></TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignRight>13</TD><TD class=alignRight>0</TD><TD class=alignRight>13</TD><TD class=alignRight>0 </TD><TD class=alignRight>10</TD><TD class=alignRight>10 (100%)</TD></TR></TBODY><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate increased slightly to 23.0 consultations per 1,000 patient visits in week 48 which is within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (66.9/1,000 visits) and those 5 to 19 years old (44.8/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2011-w48-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 48, two new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations (from BC and AB) were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. One case tested positive for influenza A(H3N2) virus infection and the other case was positive for influenza A (unsubtyped).
Seven cases have been reported this season to date (from BC, AB & QC); all of which were due to influenza A. The proportion of cases by age group is as follows: 14.3% among infants <6 months of age; 14.3% among children 6-24 months of age; 42.9% were between 2-4 years; 14.3% were between 5-9 years; and 14.3% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 48, one new laboratory-confirmed adult influenza hospitalization was reported from AB due to influenza A/H3N2. The case was between 45-64 years of age.
To date this season, 8 adult influenza hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 12.5% were in those 20-44 years of age; 25.0% were in those 45-64 years of age and 62.5% were in those > 65 years.
Note: Adult influenza hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w48_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 49

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 49

December 4 to December 10 2011 (Week 49)

Posted 2011-12-16
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w49_11/pdf/fw2011-49-eng.pdf" jQuery1324073613348="2">2011-2012 FluWatch: December 4 to December 10 2011 (Week 49) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents


Overall Influenza Summary
  • Influenza activity in Canada is increasing in more regions compared to previous weeks
  • Two regions (within <ABBR title="British Columbia ">BC</ABBR> & <ABBR title=Saskatchewan>SK</ABBR>) reported localized influenza activity and 10 regions (within BC, <ABBR title="Alberta ">AB</ABBR>, <ABBR title=Ontario>ON</ABBR> & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity
  • Two outbreaks of influenza in long-term care facilities were reported this week
  • In week 49, 19 laboratory detections of influenza were reported (10 A/H3, 7 A unsubtyped and 2 B)
  • Three influenza hospitalizations were reported this week (2 paediatric and 1 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate declined to slightly below expected levels in week 49
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 49, two surveillance regions (within BC & SK) reported localized activity and 10 regions (within BC, AB, ON & QC) reported sporadic influenza activity (see Figure 1). Two outbreaks of influenza were reported this week; both were in long-term care facilities (in BC & SK) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 49




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2011-w49-fg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2011-w49-fg3-eng.gif

Text Equivalent

Top of Page
Influenza and Other Respiratory Virus Detections

In week 49, 2,609 influenza tests were conducted of which 29 (1.1%) were positive for influenza. The proportion of tests positive for influenza has remained low since the beginning of this (Table 1 and Figure 4).
The proportion of influenza virus detections by type/subtype this season to date is as follows: 81.5% influenza A (64% - A(H3); 5% - A(H1N1)pdm09; 31% - unsubtyped) and 18.5% influenza B (Table 1).
Detailed information on age and type/subtype were received on 74 cases this season to date (Table 2). The proportions of cases by age group are as follows: 28.4% were < 5 years; 8.1% were between 5-19 years; 27.0% were between 20-44 years; 9.5% were between 45-64 years of age; and 27.0% were ≥ 65 years.
In week 49, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV </ABBR>(10.7%) and human metapneumovirus (4.9%) continued to increase. The proportion of positive tests for the other respiratory viruses remained similar to previous weeks (rhinovirus-8.6%; parainfluenza-5.4%; adenovirus-5.4%; coronavirus-1.6%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(December 4 to December 10, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to December 10, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from <ABBR title=Nunavut>NT</ABBR>, <ABBR title=Yukon>YT</ABBR>, and <ABBR title=Nunavut>NU</ABBR> are sent to reference laboratories in other provinces.
Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>30</TD><TD class=alignRight>0</TD><TD class=alignRight>30</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>11</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>30</TD><TD class=alignRight>0</TD><TD class=alignRight>24</TD><TD class=alignRight>1</TD><TD class=alignRight>5</TD><TD class=alignRight>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>11</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD><TD class=alignRight>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>1</TD><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>23</TD><TD class=alignRight>12</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>17</TD><TD class=alignRight>0</TD><TD class=alignRight>10</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>2</TD><TD class=alignRight>97</TD><TD class=alignRight>0</TD><TD class=alignRight>62</TD><TD class=alignRight>5</TD><TD class=alignRight>30</TD><TD class=alignRight>22</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(December 4 to December 10, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to December 10, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>17</TD><TD class=alignRight>2</TD><TD class=alignRight>12</TD><TD class=alignRight>3</TD><TD class=alignRight>4</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>14</TD><TD class=alignRight>2</TD><TD class=alignRight>4</TD><TD class=alignRight>8</TD><TD class=alignRight>6</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>1</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>16</TD><TD class=alignRight>1</TD><TD class=alignRight>7</TD><TD class=alignRight>8</TD><TD class=alignRight>4</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>6</TD><TD class=alignRight>1</TD><TD class=alignRight>58</TD><TD class=alignRight>5</TD><TD class=alignRight>30</TD><TD class=alignRight>23</TD><TD class=alignRight>16</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2011-w49-fg4-eng.gif

Text Equivalent
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2011-w49-fg5-eng.gif

Text Equivalent

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 27 influenza viruses (18 A/H3N2, 2 A/H1N1 and 7 B). All 18 A/H3N2 viruses (from BC, AB & ON) are antigenically related to A/Perth/16/2009. The two A/H1N1 viruses (from QC) are antigenically related to A/California/07/2009. Three of the influenza B viruses characterized (from AB & QC) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other four influenza B viruses (from BC, AB & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 13
2011-w49-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008
Text Equivalent

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 27 influenza viruses (18 A/H3N2, two A/H1N1 and seven B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 27 viruses were susceptible to oseltamivir and zanamivir. A total of 24 influenza A viruses (23 H3N2 and 1 H1N1) were tested for amantadine resistance and all 24 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignRight>18</TD><TD class=alignRight>0</TD><TD class=alignRight>18</TD><TD class=alignRight>0</TD><TD class=alignRight>23</TD><TD class=alignRight>23 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1(100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>NA<SUP>* </SUP></TD><TD class=alignRight>NA<SUP>* </SUP></TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignRight>27</TD><TD class=alignRight>0</TD><TD class=alignRight>27</TD><TD class=alignRight>0</TD><TD class=alignRight>24</TD><TD class=alignRight>24 (100%)</TD></TR></TBODY><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate declined to 16.2 consultations per 1,000 patient visits in week 49 which is slightly below the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (48.2/1,000 visits) and those 5 to 19 years old (27.6/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2011-w49-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 49, two new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations (from BC) were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. Both cases tested positive for influenza A (unsubtyped) and were between 5-9 years of age.
Ten cases have been reported this season to date (from BC, AB & QC); all of which were due to influenza A. The proportion of cases by age group is as follows: 10.0% among infants <6 months of age; 10.0% among children 6-24 months of age; 40.0% were between 2-4 years; 30.0% were between 5-9 years; and 10.0% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 49, one new laboratory-confirmed adult influenza hospitalization was reported from AB due to influenza A/H3N2. The case was between 20-44 years of age.

To date this season, 9 adult influenza hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 11.1% were in those 20-44 years of age; 33.3% were in those 45-64 years of age and 55.6% were in those > 65 years.

Note: Adult influenza hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w49_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 50

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 50

December 11 to December 17 2011 (Week 50)

Posted 2011-12-23
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w50_11/pdf/fw2011-50-eng.pdf" jQuery1325343779868="2">2011-2012 FluWatch: December 11 to December 17 2011 (Week 50) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada has remained similar to previous weeks
  • One region (within <ABBR title="British Columbia ">BC</ABBR>) reported localized influenza activity and 9 regions (within BC, <ABBR title=Saskatchewan>SK</ABBR>, <ABBR title=Ontario>ON</ABBR> & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity
  • One outbreak of influenza in long-term care facility was reported this week
  • In week 50, 63 laboratory detections of influenza were reported (51 A/H3, 3 A/H1, 7 A unsubtyped and 2 B)
  • Two influenza hospitalizations were reported this week (1 paediatric and 1 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate increased compared to the previous week but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 50, one surveillance region (within BC) reported localized activity and 9 regions (within BC, SK, ON & QC) reported sporadic influenza activity. Note that no information was received from AB this week (see Figure 1). One outbreaks of influenza was reported this week in a long-term care facility in BC (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 50




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text Equivalent
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2011-w50-fg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text Equivalent
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2011-w50-fg3-eng.gif

Text Equivalent

Top of Page
Influenza and Other Respiratory Virus Detections

In week 50, the proportion of positive influenza tests increased to 2.1% (63/3,009) (Table 1 and Figure 4). Of the provinces reporting positive influenza detections, the proportion of tests positive ranged from a high of 21.4% in BC to a low of 0.7% in ON & QC.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 85.7% influenza A (74% - A(H3); 5% - A(H1N1)pdm09; 21% - unsubtyped) and 14.3% influenza B (Table 1).
Detailed information on age and type/subtype were received on 188 cases this season to date (Table 2). The proportions of cases by age group are as follows: 20.2% were < 5 years; 10.1% were between 5-19 years; 28.2% were between 20-44 years; 13.3% were between 45-64 years of age; and 28.2% were >= 65 years.
In week 50, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> (11.8%) continued to increase. The proportion of positive tests for the other respiratory viruses declined from the previous week (rhinovirus-8.3%; parainfluenza-4.4%; adenovirus-3.9%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-5.4%; coronavirus-1.4%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(December 11 to December 17, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to December 17, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignCenter>32</TD><TD class=alignCenter>0</TD><TD class=alignCenter>32</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>62</TD><TD class=alignCenter>0</TD><TD class=alignCenter>62</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>38</TD><TD class=alignCenter>0</TD><TD class=alignCenter>35</TD><TD class=alignCenter>1</TD><TD class=alignCenter>2</TD><TD class=alignCenter>4</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>9</TD><TD class=alignCenter>0</TD><TD class=alignCenter>9</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignCenter>6</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>17</TD><TD class=alignCenter>0</TD><TD class=alignCenter>10</TD><TD class=alignCenter>5</TD><TD class=alignCenter>2</TD><TD class=alignCenter>4</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignCenter>5</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>5</TD><TD class=alignCenter>2</TD><TD class=alignCenter>30</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2</TD><TD class=alignCenter>28</TD><TD class=alignCenter>14</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>59</TD><TD class=alignCenter>0</TD><TD class=alignCenter>51</TD><TD class=alignCenter>3</TD><TD class=alignCenter>5</TD><TD class=alignCenter>4</TD><TD class=alignCenter>156</TD><TD class=alignCenter>0</TD><TD class=alignCenter>116</TD><TD class=alignCenter>8</TD><TD class=alignCenter>32</TD><TD class=alignCenter>26</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(December 11 to December 17, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to December 17, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD><TD class=alignCenter>5</TD><TD class=alignCenter>2</TD><TD class=alignCenter>32</TD><TD class=alignCenter>3</TD><TD class=alignCenter>21</TD><TD class=alignCenter>8</TD><TD class=alignCenter>6</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>16</TD><TD class=alignCenter>0</TD><TD class=alignCenter>15</TD><TD class=alignCenter>1</TD><TD class=alignCenter>3</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignCenter>12</TD><TD class=alignCenter>0</TD><TD class=alignCenter>12</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>47</TD><TD class=alignCenter>3</TD><TD class=alignCenter>36</TD><TD class=alignCenter>8</TD><TD class=alignCenter>6</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignCenter>3</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>21</TD><TD class=alignCenter>0</TD><TD class=alignCenter>18</TD><TD class=alignCenter>3</TD><TD class=alignCenter>4</TD></TR><TR><TH scope=row>65+</TH><TD class=alignCenter>20</TD><TD class=alignCenter>0</TD><TD class=alignCenter>19</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>49</TD><TD class=alignCenter>1</TD><TD class=alignCenter>42</TD><TD class=alignCenter>6</TD><TD class=alignCenter>4</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignCenter>47</TD><TD class=alignCenter>0</TD><TD class=alignCenter>41</TD><TD class=alignCenter>6</TD><TD class=alignCenter>3</TD><TD class=alignCenter>165</TD><TD class=alignCenter>7</TD><TD class=alignCenter>132</TD><TD class=alignCenter>26</TD><TD class=alignCenter>23</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2011-w50-fg4-eng.gif

Text Equivalent
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2011-w50-fg5-eng.gif

Text Equivalent

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 34 influenza viruses (19 A/H3N2, 5 A/H1N1 and 10 B). All 19 A/H3N2 viruses (from BC, AB & ON) are antigenically related to A/Perth/16/2009. All 5 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Four of the influenza B viruses characterized (from AB, ON & QC) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other 6 influenza B viruses (from BC, AB, ON & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 34
2011-w50-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.

Text Equivalent

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 34 influenza viruses (19 A/H3N2, 5 A/H1N1 and 10 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 34 viruses were susceptible to oseltamivir and zanamivir. A total of 26 influenza A viruses (24 H3N2 and 2 H1N1) were tested for amantadine resistance and all 26 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignCenter>19</TD><TD class=alignCenter>0</TD><TD class=alignCenter>19</TD><TD class=alignCenter>0</TD><TD class=alignCenter>24</TD><TD class=alignCenter>24 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignCenter>5</TD><TD class=alignCenter>0</TD><TD class=alignCenter>5</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2</TD><TD class=alignCenter>2 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignCenter>10</TD><TD class=alignCenter>0</TD><TD class=alignCenter>10</TD><TD class=alignCenter>0</TD><TD class=alignCenter>NA*</TD><TD class=alignCenter>NA*</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignCenter>34</TD><TD class=alignCenter>0</TD><TD class=alignCenter>34</TD><TD class=alignCenter>0</TD><TD class=alignCenter>26</TD><TD class=alignCenter>26 (100%)</TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate increased to 25.7 ILI consultations per 1,000 patient visits in week 50 which is within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (64.9/1,000 visits) and those 5 to 19 years old (45.3/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2011-w50-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text Equivalent
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 50, one new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalization (from BC) was reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. The case tested positive for influenza A (unsubtyped) and was between 2-4 years of age.

Thirteen cases have been reported this season to date (from BC, AB & QC); all of which were due to influenza A. The proportion of cases by age group is as follows: 15.4% among infants <6 months of age; 7.7% among children 6-24 months of age; 38.5% were between 2-4 years; 23.1% were between 5-9 years; and 15.4% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 50, one new laboratory-confirmed influenza-associated adult hospitalization was reported from ON due to influenza A. The case was > 65 years of age.

To date this season, 10 influenza-associated adult hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 20% were in those 20-44 years of age; 20% were in those 45-64 years of age and 60% were in those > 65 years.
Note: Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w50_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 50

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 50

December 18 to December 24 2011 (Week 51)

Posted 2012-01-03
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w51_11/pdf/fw2011-51-eng.pdf" jQuery1325887547322="2">2011-2012 FluWatch: December 18 to December 24 2011 (Week 51) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada has remained similar to previous weeks
  • One region (within <ABBR title=Saskatchewan>SK</ABBR>) reported localized influenza activity and 7 regions (within <ABBR title="British Columbia ">BC</ABBR>, SK & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity
  • One outbreak of influenza in a long-term care facility was reported this week
  • In week 51, 49 laboratory detections of influenza were reported (47 A/H3 and 2 B)
  • Two paediatric influenza hospitalizations were reported this week
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 51, one surveillance region (within SK) reported localized activity and 7 regions (within BC, SK & QC) reported sporadic influenza activity. Note that data was not received from several provinces and territories this week: <ABBR title="Alberta ">AB</ABBR>, <ABBR title=Ontario>ON</ABBR>, <ABBR title="New Brunswick">NB</ABBR>, <ABBR title="Prince Edward Island">PEI</ABBR> and <ABBR title="Northwest Territories">NT</ABBR> (see Figure 1). One outbreak of influenza was reported this week in a long-term care facility in SK (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 51




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2011-w51-fg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2011-w51-fg3-eng.gif

Text equivalent for figure 3

Top of Page
Influenza and Other Respiratory Virus Detections

In week 51, the proportion of positive influenza tests increased to 4.3% (49/1,129) (Figure 4 & 5). Note that laboratory findings from <ABBR title=Newfoundland/Labrador>NL</ABBR>, QC, <ABBR title=Manitoba>MB</ABBR> and the majority of laboratories in ON were not received this week. Of the provinces reporting positive influenza detections, the proportion of tests positive ranged from a high of 18.1% in BC to a low of 1.0% in ON.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 87.9% influenza A (80% - A(H3); 4% - A(H1N1)pdm09; 16% - unsubtyped) and 12.1% influenza B (Table 1).
Detailed information on age and type/subtype were received on 229 cases this season to date (Table 2). The proportions of cases by age group are as follows: 19.2% were < 5 years; 11.4% were between 5-19 years; 27.1% were between 20-44 years; 13.5% were between 45-64 years of age; and 28.8% were ≥ 65 years.
In week 51, the proportion of tests positive for RSV (9.8%) declined meanwhile the proportion positive for hMPV increased to 10.4%. The proportion of positive tests for the other respiratory viruses remained similar to previous weeks (rhinovirus-9.8%; parainfluenza-6.2%; adenovirus-2.8%; coronavirus-1.7%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(December 18 to December 24, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to December 24, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>87</TD><TD class=alignRight>0</TD><TD class=alignRight>87</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>8</TD><TD class=alignRight>0</TD><TD class=alignRight>8</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>46</TD><TD class=alignRight>0</TD><TD class=alignRight>43</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>4</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>21</TD><TD class=alignRight>0</TD><TD class=alignRight>21</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>19</TD><TD class=alignRight>0</TD><TD class=alignRight>12</TD><TD class=alignRight>5</TD><TD class=alignRight>2</TD><TD class=alignRight>5</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>30</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>28</TD><TD class=alignRight>14</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>47</TD><TD class=alignRight>0</TD><TD class=alignRight>47</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>203</TD><TD class=alignRight>0</TD><TD class=alignRight>163</TD><TD class=alignRight>8</TD><TD class=alignRight>32</TD><TD class=alignRight>28</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(December 18 to December 24, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to December 24, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>38</TD><TD class=alignRight>3</TD><TD class=alignRight>27</TD><TD class=alignRight>8</TD><TD class=alignRight>6</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>23</TD><TD class=alignRight>0</TD><TD class=alignRight>22</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>56</TD><TD class=alignRight>3</TD><TD class=alignRight>45</TD><TD class=alignRight>8</TD><TD class=alignRight>6</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>27</TD><TD class=alignRight>0</TD><TD class=alignRight>24</TD><TD class=alignRight>3</TD><TD class=alignRight>4</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>61</TD><TD class=alignRight>1</TD><TD class=alignRight>54</TD><TD class=alignRight>6</TD><TD class=alignRight>5</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>31</TD><TD class=alignRight>0</TD><TD class=alignRight>31</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>205</TD><TD class=alignRight>7</TD><TD class=alignRight>172</TD><TD class=alignRight>26</TD><TD class=alignRight>24</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2011-w51-fg4-eng.gif

Text equivalent for figure 4
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2011-w51-fg5-eng.gif

Text equivalent for figure 5

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 38 influenza viruses (19 A/H3N2, 6 A/H1N1 and 13 B). All 19 A/H3N2 viruses (from BC, AB & ON) are antigenically related to A/Perth/16/2009. All 6 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Six of the influenza B viruses characterized (from AB, ON & QC) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other 7 influenza B viruses (from BC, AB, ON, QC & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 38
2011-w51-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.

Text equivalent for figure 6

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 34 influenza viruses (19 A/H3N2, 5 A/H1N1 and 10 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 34 viruses were susceptible to oseltamivir and zanamivir. A total of 29 influenza A viruses (24 H3N2 and 5 H1N1) were tested for amantadine resistance and all 29 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignRight>19</TD><TD class=alignRight>0</TD><TD class=alignRight>19</TD><TD class=alignRight>0</TD><TD class=alignRight>24</TD><TD class=alignRight>24 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>5 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignRight>10</TD><TD class=alignRight>0</TD><TD class=alignRight>10</TD><TD class=alignRight>0</TD><TD class=alignRight>NA<SUP>* </SUP></TD><TD class=alignRight>NA<SUP>* </SUP></TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignRight>34</TD><TD class=alignRight>0</TD><TD class=alignRight>34</TD><TD class=alignRight>0</TD><TD class=alignRight>29</TD><TD class=alignRight>29 (100%)</TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate increased slightly from previous week to 25.9 ILI consultations per 1,000 patient visits in week 51 but is within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (70.6/1,000 visits) and those 5 to 19 years old (36.7/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2011-w51-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 51, two new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations (from BC) were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. Both cases tested positive for influenza A (unsubtyped). The first case was <6 months of age and the other was between 10-16 years of age.
Fifteen cases have been reported this season to date (from BC, AB & QC); all of which were due to influenza A. The proportion of cases by age group is as follows: 13.3% among infants <6 months of age; 6.7% among children 6-24 months of age; 40.0% were between 2-4 years; 20.0% were between 5-9 years; and 20.0% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 51, no new laboratory-confirmed influenza-associated adult hospitalizations were reported.

To date this season, 10 influenza-associated adult hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 20% were in those 20-44 years of age; 20% were in those 45-64 years of age and 60% were in those ≥ 65 years.
Note: Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w51_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 52

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 52

December 25 to December 31 2011 (Week 52)

Posted 2012-01-06
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w52_11/pdf/fw2011-52-eng.pdf" jQuery1325890308207="2">2011-2012 FluWatch: December 25 to December 31 2011 (Week 52) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada is increasing in some regions but remains low in most areas of the country
  • Three regions (within <ABBR title="British Columbia ">BC</ABBR> & <ABBR title=Saskatchewan>SK</ABBR>) reported localized influenza activity and 13 regions (within BC, <ABBR title="Alberta ">AB</ABBR>, SK, <ABBR title=Ontario>ON</ABBR> & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity
  • Three outbreaks of influenza in a long-term care facilities were reported this week
  • In week 52, 73 laboratory detections of influenza were reported (42 A/H3, 1 A(H1N1)pdm09, 15 A unsubtyped and 15 B)
  • Seven paediatric influenza hospitalizations were reported this week (in BC, AB, ON & QC)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate increased this week compared to previous weeks but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 52, three surveillance regions (within BC & SK) reported localized activity and 13 regions (within BC, AB, SK, ON & QC) reported sporadic influenza activity. Note that data was not received from <ABBR title="Nova Scotia ">NS</ABBR> this week (see Figure 1). Three outbreaks of influenza were reported this week, all in long-term care facilities (2 in BC and 1 in SK) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 52




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2012-w52-fg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2012-w52-fg3-eng.gif

Text equivalent for figure 3

Top of Page
Influenza and Other Respiratory Virus Detections

In week 52, the proportion of positive influenza tests increased slightly to 2.6% (73/2,789) (Figure 4 & 5). ). Of the provinces reporting positive influenza detections, the proportion of tests positive ranged from a high of 19.7% in SK to a low of 0.8% in AB.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 84.6% influenza A (76% - A(H3); 6% - A(H1N1)pdm09; 18% - unsubtyped) and 15.4% influenza B (Table 1).
Detailed information on age and type/subtype were received on 299 cases this season to date (Table 2). The proportions of cases by age group are as follows: 21.4% were < 5 years; 11.4% were between 5-19 years; 24.7% were between 20-44 years; 14.7% were between 45-64 years of age; and 27.8% were ≥ 65 years.
In week 52, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> continued to increase (19.8%), with the highest percent positives being reported in <ABBR title="New Brunswick ">NB</ABBR>, NS, QC and ON. The proportion of positive tests for the other respiratory viruses remained similar to previous weeks (rhinovirus-6.5%; parainfluenza-3.6%; adenovirus-3.9%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-7.8%; coronavirus-3.4%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(December 24 to December 31, 2011)
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to December 31, 2011)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>20</TD><TD class=alignRight>0</TD><TD class=alignRight>20</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>107</TD><TD class=alignRight>0</TD><TD class=alignRight>107</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>11</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>58</TD><TD class=alignRight>0</TD><TD class=alignRight>54</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>7</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>14</TD><TD class=alignRight>0</TD><TD class=alignRight>10</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>35</TD><TD class=alignRight>0</TD><TD class=alignRight>31</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>2</TD><TD class=alignRight>5</TD><TD class=alignRight>32</TD><TD class=alignRight>0</TD><TD class=alignRight>15</TD><TD class=alignRight>13</TD><TD class=alignRight>4</TD><TD class=alignRight>16</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>8</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>8</TD><TD class=alignRight>5</TD><TD class=alignRight>42</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>39</TD><TD class=alignRight>20</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>58</TD><TD class=alignRight>0</TD><TD class=alignRight>42</TD><TD class=alignRight>1</TD><TD class=alignRight>15</TD><TD class=alignRight>15</TD><TD class=alignRight>274</TD><TD class=alignRight>0</TD><TD class=alignRight>207</TD><TD class=alignRight>17</TD><TD class=alignRight>50</TD><TD class=alignRight>50</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(December 24 to December 31, 2011)
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to December 31, 2011)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>9</TD><TD class=alignRight>1</TD><TD class=alignRight>7</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>52</TD><TD class=alignRight>8</TD><TD class=alignRight>36</TD><TD class=alignRight>8</TD><TD class=alignRight>12</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>28</TD><TD class=alignRight>1</TD><TD class=alignRight>26</TD><TD class=alignRight>1</TD><TD class=alignRight>6</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>67</TD><TD class=alignRight>4</TD><TD class=alignRight>55</TD><TD class=alignRight>8</TD><TD class=alignRight>7</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>11</TD><TD class=alignRight>0</TD><TD class=alignRight>10</TD><TD class=alignRight>1</TD><TD class=alignRight>1</TD><TD class=alignRight>39</TD><TD class=alignRight>0</TD><TD class=alignRight>35</TD><TD class=alignRight>4</TD><TD class=alignRight>5</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>13</TD><TD class=alignRight>0</TD><TD class=alignRight>13</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>76</TD><TD class=alignRight>1</TD><TD class=alignRight>69</TD><TD class=alignRight>6</TD><TD class=alignRight>7</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>46</TD><TD class=alignRight>1</TD><TD class=alignRight>43</TD><TD class=alignRight>2</TD><TD class=alignRight>6</TD><TD class=alignRight>262</TD><TD class=alignRight>14</TD><TD class=alignRight>221</TD><TD class=alignRight>27</TD><TD class=alignRight>37</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2012-w52-fg4-eng.gif

Text equivalent for figure 4
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2012-w52-fg5-eng.gif

Text equivalent for figure 5

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 47 influenza viruses (26 A/H3N2, 6 A/H1N1 and 15 B). All 26 A/H3N2 viruses (from BC, AB & ON) are antigenically related to A/Perth/16/2009. All 6 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Seven of the influenza B viruses characterized (from BC, AB, ON & QC) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other 8 influenza B viruses (from BC, AB, ON & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 47
2012-w52-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.

Text equivalent for figure 6

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 45 influenza viruses (25 A/H3N2, 6 A/H1N1 and 14 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 45 viruses were susceptible to oseltamivir and zanamivir. A total of 29 influenza A viruses (24 H3N2 and 5 H1N1) were tested for amantadine resistance and all 29 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>24</TD><TD class=alignRight>24 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>5 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignRight>14</TD><TD class=alignRight>0</TD><TD class=alignRight>14</TD><TD class=alignRight>0</TD><TD class=alignRight>NA<SUP>* </SUP></TD><TD class=alignRight>NA<SUP>* </SUP></TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignRight>45</TD><TD class=alignRight>0</TD><TD class=alignRight>45</TD><TD class=alignRight>0</TD><TD class=alignRight>29</TD><TD class=alignRight>29 (100%)</TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate increased from previous weeks to 33.8 ILI consultations per 1,000 patient visits in week 52 and is within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (86.5/1,000 visits) and those 5 to 19 years old (49.3/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2012-w52-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 52, seven new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. Two hospitalizations were due to influenza A (in BC & AB) and 5 were due to influenza B (1 in AB, 2 in ON & 2 in QC).
To date this season, 25 cases have been reported (from BC, AB, SK, ON & QC); 19 (76%) were due to influenza A and 6 (24%) were due to influenza B. The proportion of cases by age group is as follows: 16% among infants <6 months of age; 12% among children 6-24 months of age; 44% were between 2-4 years; 12% were between 5-9 years; and 16% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths

In week 52, no new laboratory-confirmed influenza-associated adult hospitalizations were reported.

To date this season, 10 influenza-associated adult hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 20% were in those 20-44 years of age; 20% were in those 45-64 years of age and 60% were in those ≥ 65 years.
Note: Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK.

,,,/
http://www.phac-aspc.gc.ca/fluwatch/11-12/w52_11/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 1

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 1

January 1 to January 7 2012 (Week 01)

Posted 2012-01-13
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w01_12/pdf/fw2012-01-eng.pdf" jQuery1326506674545="2">2011-2012 FluWatch: January 1 to January 7 2012 (Week 01) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity in Canada is similar to previous weeks with only certain regions reporting increased activity (i.e. western provinces, <ABBR title=Ontario>ON</ABBR> and <ABBR title=Quebec>QC</ABBR>) while activity remains low in the rest (i.e. Atlantic region, MB and the Territories)
  • Three regions (within BC & QC) reported localized influenza activity and 18 regions (within <ABBR title="British Columbia ">BC</ABBR>, <ABBR title="Alberta ">AB</ABBR>, <ABBR title=Saskatchewan>SK</ABBR>, ON & QC) reported sporadic influenza activity
  • Three outbreaks of influenza were reported this week (2 in hospitals and 1 in a <ABBR title="long-term care facilities">LTCF</ABBR>)
  • In week 01, 109 laboratory detections of influenza were reported (59 A/H3, 8 A(H1N1)pdm09, 17 A unsubtyped and 25 B)
  • Fourteen influenza-associated hospitalizations were reported this week (6 paediatric and 8 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate increased this week compared to previous weeks but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 01, three surveillance regions (within BC & QC) reported localized activity and 18 regions (within BC, AB, SK, ON & QC) reported sporadic influenza activity (see Figure 1). Three outbreaks of influenza were reported this week, 1 in a long-term care facility (in QC) and 2 in hospitals (in BC) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 1




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1Map of overall Influenza activity level by province and territory, Canada
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2012-w01-fg2-eng.gif

flu1112-leg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2Number of influenza surveillance regions? reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2012-w01-fg3-eng.gif

flu1112-leg3-eng.gif

Text equivalent for figure 3Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

Top of Page
Influenza and Other Respiratory Virus Detections

In week 01, the proportion of positive influenza tests increased slightly to 2.9% (109/3,697) (Figure 4 & 5). Of the provinces reporting positive influenza detections, the proportion of tests positive ranged from a high of 16.5% in QC to a low of 0.7% in <ABBR title=Manitoba>MB</ABBR>.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 82.3% influenza A (74% - A(H3); 7% - A(H1N1)pdm09; 19% - unsubtyped) and 17.7% influenza B (Table 1).
Detailed information on age and type/subtype were received on 332 cases this season to date (Table 2). ). The proportions of cases by age group are as follows: 20.5% were < 5 years; 11.8% were between 5-19 years; 27.1% were between 20-44 years; 14.8% were between 45-64 years of age; and 26% were ≥ 65 years.
In week 01, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> decreased slightly (16.6%); but it remains the most prevalent among the other respiratory viruses being detected. The highest percent positives for RSV were reported in <ABBR title="Prince Edward Island ">PEI</ABBR>, <ABBR title="New Brunswick ">NB</ABBR>, QC and ON. The proportion of positive tests for the other respiratory viruses remained similar to previous weeks (rhinovirus-6.2%; parainfluenza-3.5%; adenovirus-3.7%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-9.0%; coronavirus-4.3%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(January 1 to January 7 2012 (Week 01))
</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to January 7, 2012)
</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*
</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.

</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight>33</TD><TD class=alignRight>0</TD><TD class=alignRight>33</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>140</TD><TD class=alignRight>0</TD><TD class=alignRight>140</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>71</TD><TD class=alignRight>0</TD><TD class=alignRight>67</TD><TD class=alignRight>1</TD><TD class=alignRight>3</TD><TD class=alignRight>12</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight>7</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>42</TD><TD class=alignRight>0</TD><TD class=alignRight>37</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight>17</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD><TD class=alignRight>8</TD><TD class=alignRight>4</TD><TD class=alignRight>10</TD><TD class=alignRight>52</TD><TD class=alignRight>0</TD><TD class=alignRight>21</TD><TD class=alignRight>23</TD><TD class=alignRight>8</TD><TD class=alignRight>28</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignRight>14</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>11</TD><TD class=alignRight>9</TD><TD class=alignRight>56</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>2</TD><TD class=alignRight>51</TD><TD class=alignRight>30</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignRight>84</TD><TD class=alignRight>0</TD><TD class=alignRight>59</TD><TD class=alignRight>8</TD><TD class=alignRight>17</TD><TD class=alignRight>25</TD><TD class=alignRight>362</TD><TD class=alignRight>0</TD><TD class=alignRight>268</TD><TD class=alignRight>26</TD><TD class=alignRight>68</TD><TD class=alignRight>78</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012*
</CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(January 1 to January 7 2012 (Week 01))
</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to January 7, 2012)
</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.

</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignRight>5</TD><TD class=alignRight>1</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>55</TD><TD class=alignRight>10</TD><TD class=alignRight>43</TD><TD class=alignRight>2</TD><TD class=alignRight>13</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>3</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>34</TD><TD class=alignRight>2</TD><TD class=alignRight>31</TD><TD class=alignRight>1</TD><TD class=alignRight>5</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>12</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>82</TD><TD class=alignRight>4</TD><TD class=alignRight>75</TD><TD class=alignRight>3</TD><TD class=alignRight>8</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignRight>5</TD><TD class=alignRight>1</TD><TD class=alignRight>4</TD><TD class=alignRight>0</TD><TD class=alignRight>1</TD><TD class=alignRight>43</TD><TD class=alignRight>1</TD><TD class=alignRight>41</TD><TD class=alignRight>1</TD><TD class=alignRight>6</TD></TR><TR><TH scope=row>65+</TH><TD class=alignRight>4</TD><TD class=alignRight>2</TD><TD class=alignRight>2</TD><TD class=alignRight>0</TD><TD class=alignRight>2</TD><TD class=alignRight>81</TD><TD class=alignRight>3</TD><TD class=alignRight>78</TD><TD class=alignRight>0</TD><TD class=alignRight>5</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD><TD class=alignRight>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignRight>29</TD><TD class=alignRight>4</TD><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>7</TD><TD class=alignRight>295</TD><TD class=alignRight>20</TD><TD class=alignRight>268</TD><TD class=alignRight>7</TD><TD class=alignRight>37</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2012-w01-fg4-eng.gif

flu1112-leg4-eng.gif

Text equivalent for figure 4Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2012-w01-fg5-eng.gif

Text equivalent for figure 5Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (NML) has antigenically characterized 61 influenza viruses (27 A/H3N2, 8 A/H1N1 and 26 B). All 27 A/H3N2 viruses (from BC, AB, SK & ON) are antigenically related to A/Perth/16/2009. All 8 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Fourteen of the influenza B viruses characterized (from BC, AB, ON & QC) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other 12 influenza B viruses (from BC, AB, ON, QC & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 61
2012-w01-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.

Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 61 influenza viruses (27 A/H3N2, 9 A/H1N1 and 25 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 61 viruses were susceptible to oseltamivir and zanamivir. A total of 42 influenza A viruses (36 H3N2 and 6 H1N1) were tested for amantadine resistance and all 42 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignRight>27</TD><TD class=alignRight>0</TD><TD class=alignRight>27</TD><TD class=alignRight>0</TD><TD class=alignRight>36</TD><TD class=alignRight>36 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>9</TD><TD class=alignRight>0</TD><TD class=alignRight>6</TD><TD class=alignRight>6 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>25</TD><TD class=alignRight>0</TD><TD class=alignRight>NA<SUP>* </SUP></TD><TD class=alignRight>NA<SUP>* </SUP></TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignRight>61</TD><TD class=alignRight>0</TD><TD class=alignRight>61</TD><TD class=alignRight>0</TD><TD class=alignRight>42</TD><TD class=alignRight>42 (100%)</TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate increased from previous weeks to 35.0 ILI consultations per 1,000 patient visits in week 01 and is within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (120.8/1,000 visits) and those 5 to 19 years old (50.1/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2012-w01-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 01, six new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>)network. Two hospitalizations were due to influenza A (in BC & AB) and 4 were due to influenza B (1 in AB, 1 in ON & 2 in QC).
To date this season, 30 cases have been reported (from BC, AB, SK, ON & QC); 20 (66.7%) were due to influenza A and 10 (33.3%) were due to influenza B. The proportion of cases by age group is as follows: 16.7% among infants <6 months of age; 13.3% among children 6-24 months of age; 46.7% were between 2-4 years; 10% were between 5-9 years; and 13.3% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 01, 8 new laboratory-confirmed influenza-associated adult hospitalizations were reported: 1 in AB & 7 in ON.
To date this season, 23 influenza-associated adult hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 30% were in those 20-44 years of age; 13% were in those 45-64 years of age and 57% were in those ≥ 65 years.
Note: Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w01_12/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 2

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 2

January 8 to January 14 2012 (Week 02)

Posted 2012-01-20
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w02_12/pdf/fw2012-02-eng.pdf" jQuery1327092285814="2">2011-2012 FluWatch: January 8 to January 14 2012 (Week 02) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity is increasing in more regions across the country; however, activity remains low in certain areas (i.e. Atlantic region, the Territories, and northern regions of <ABBR title=Qu?bec>QC</ABBR> & <ABBR title=Ontario>ON</ABBR>)
  • Seven regions reported localized influenza activity and 16 regions reported sporadic influenza activity
  • Eight outbreaks of influenza were reported this week (3 in hospitals and 5 in LTCFs)
  • In week 02, 134 laboratory detections of influenza were reported (73 A/H3, 9 A(H1N1)pdm09, 14 A unsubtyped and 38 B)
  • Eighteen influenza-associated hospitalizations were reported this week (3 paediatric and 15 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate declined this week compared to previous weeks but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 02, seven surveillance regions (within BC, AB, SK, MB & ON) reported localized activity and 16 regions (within <ABBR title="British Columbia">BC</ABBR>, <ABBR title=Alberta>AB</ABBR>, <ABBR title=Saskatchewan>SK</ABBR>, <ABBR title=Ontario>ON</ABBR> & <ABBR title=Qu?bec>QC</ABBR>) reported sporadic influenza activity (see Figure 1). Eight outbreaks of influenza were reported this week: 5 in a long-term care facilities (in AB, SK, MB & ON) and 3 in hospitals (in BC) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 2




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1Map of overall Influenza activity level by province and territory, Canada
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2012-w02-fg2-eng.gif

flu1112-leg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2Number of influenza surveillance regions? reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2012-w02-fg3-eng.gif

flu1112-leg3-eng.gif

Text equivalent for figure 3Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

Top of Page
Influenza and Other Respiratory Virus Detections

In week 02, the proportion of positive influenza tests increased slightly to 3.4% (134/3,894) (Figure 4 & 5). Although the majority of influenza virus detections since the start of the season were for influenza A viruses, the number of influenza B virus detections have been increasing over recent weeks.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 79.4% influenza A (74% - A(H3); 8% - A(H1N1)pdm09; 18% - unsubtyped) and 20.6% influenza B (Table 1).
Detailed information on age and type/subtype were received on 525 cases this season to date (Table 2). The proportions of cases by age group are as follows: 21.1% were < 5 years; 10.3% were between 5-19 years; 25.9% were between 20-44 years; 13.0% were between 45-64 years of age; and 29.7% were >= 65 years.
In week 02, the proportion of tests positive for <ABBR title="Respiratory Virus Detections">RSV</ABBR> was similar to the previous week (17.6%) and remains the most prevalent among the other respiratory viruses being detected. The highest percent positives for RSV were reported in QC and ON. The proportion of positive tests for the other respiratory viruses remained similar to previous weeks (rhinovirus-5.6%; parainfluenza-3.1%; adenovirus-3.6%; hMPV-6.0%; coronavirus-5.2%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-blue><TH rowSpan=3 scope=col>Reporting provinces</TH><TH colSpan=6 scope=colgroup>Weekly
(January 8 to January 14 2012 (Week 02))</TH><TH colSpan=6 scope=colgroup>Cumulative
(August 29, 2010 to January 14, 2012)</TH></TR><TR class=bg-colour-blue><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=5 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-blue><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(<ABBR title=unsubtyped>Un S</ABBR>)*</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>A(H1)</TH><TH scope=col>A(H3)</TH><TH scope=col>Pand H1N1</TH><TH class=noWrap scope=col>A
(Un S)*</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=13>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.
</TD></TR></TFOOT><TBODY><TR><TH class=bg-colour-blue scope=row><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignCenter>39</TD><TD class=alignCenter>0</TD><TD class=alignCenter>38</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>4</TD><TD class=alignCenter>179</TD><TD class=alignCenter>0</TD><TD class=alignCenter>178</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>11</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Alberta>AB</ABBR></TH><TD class=alignCenter>20</TD><TD class=alignCenter>0</TD><TD class=alignCenter>19</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>91</TD><TD class=alignCenter>0</TD><TD class=alignCenter>86</TD><TD class=alignCenter>1</TD><TD class=alignCenter>4</TD><TD class=alignCenter>12</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignCenter>11</TD><TD class=alignCenter>0</TD><TD class=alignCenter>10</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1</TD><TD class=alignCenter>53</TD><TD class=alignCenter>0</TD><TD class=alignCenter>47</TD><TD class=alignCenter>0</TD><TD class=alignCenter>6</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Ontario>ON</ABBR></TH><TD class=alignCenter>16</TD><TD class=alignCenter>0</TD><TD class=alignCenter>6</TD><TD class=alignCenter>7</TD><TD class=alignCenter>3</TD><TD class=alignCenter>13</TD><TD class=alignCenter>70</TD><TD class=alignCenter>0</TD><TD class=alignCenter>27</TD><TD class=alignCenter>31</TD><TD class=alignCenter>12</TD><TD class=alignCenter>44</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title=Quebec>QC</ABBR></TH><TD class=alignCenter>9</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>8</TD><TD class=alignCenter>4</TD><TD class=alignCenter>65</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD><TD class=alignCenter>59</TD><TD class=alignCenter>34</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="New Brunswick">NB</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Nova Scotia ">NS</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Prince Edward Island ">PE</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row><ABBR title="Newfoundland/Labrador ">NL</ABBR></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>16</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>16</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>96</TD><TD class=alignCenter>0</TD><TD class=alignCenter>73</TD><TD class=alignCenter>9</TD><TD class=alignCenter>14</TD><TD class=alignCenter>38</TD><TD class=alignCenter>460</TD><TD class=alignCenter>0</TD><TD class=alignCenter>341</TD><TD class=alignCenter>36</TD><TD class=alignCenter>83</TD><TD class=alignCenter>119</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012* </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=3 scope=col>Age groups</TH><TH colSpan=5 scope=colgroup>Weekly
(January 8 to January 14 2012 (Week 02))</TH><TH colSpan=5 scope=colgroup>Cumulative
(Aug. 29, 2010 to January 14, 2012)</TH></TR><TR class=bg-colour-yellow><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH><TH colSpan=4 scope=colgroup>Influenza A</TH><TH scope=col>B</TH></TR><TR class=bg-colour-yellow><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH><TH scope=col>A Total</TH><TH scope=col>Pandemic H1N1</TH><TH scope=col>A/H3N2</TH><TH scope=col>A unsubtyped</TH><TH scope=col>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.
</TD></TR></TFOOT><TBODY><TR><TH scope=row>< 5</TH><TD class=alignCenter>8</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD><TD class=alignCenter>2</TD><TD class=alignCenter>3</TD><TD class=alignCenter>81</TD><TD class=alignCenter>16</TD><TD class=alignCenter>49</TD><TD class=alignCenter>16</TD><TD class=alignCenter>30</TD></TR><TR><TH scope=row>5-19</TH><TD class=alignCenter>7</TD><TD class=alignCenter>0</TD><TD class=alignCenter>7</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>45</TD><TD class=alignCenter>2</TD><TD class=alignCenter>40</TD><TD class=alignCenter>3</TD><TD class=alignCenter>9</TD></TR><TR><TH scope=row>20-44</TH><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>6</TD><TD class=alignCenter>2</TD><TD class=alignCenter>1</TD><TD class=alignCenter>117</TD><TD class=alignCenter>6</TD><TD class=alignCenter>90</TD><TD class=alignCenter>21</TD><TD class=alignCenter>19</TD></TR><TR><TH scope=row>45-64</TH><TD class=alignCenter>5</TD><TD class=alignCenter>1</TD><TD class=alignCenter>3</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>59</TD><TD class=alignCenter>2</TD><TD class=alignCenter>50</TD><TD class=alignCenter>7</TD><TD class=alignCenter>9</TD></TR><TR><TH scope=row>65+</TH><TD class=alignCenter>24</TD><TD class=alignCenter>0</TD><TD class=alignCenter>21</TD><TD class=alignCenter>3</TD><TD class=alignCenter>4</TD><TD class=alignCenter>140</TD><TD class=alignCenter>4</TD><TD class=alignCenter>116</TD><TD class=alignCenter>20</TD><TD class=alignCenter>16</TD></TR><TR><TH scope=row>Unknown</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH scope=row>Total</TH><TD class=alignCenter>52</TD><TD class=alignCenter>4</TD><TD class=alignCenter>40</TD><TD class=alignCenter>8</TD><TD class=alignCenter>8</TD><TD class=alignCenter>442</TD><TD class=alignCenter>30</TD><TD class=alignCenter>345</TD><TD class=alignCenter>67</TD><TD class=alignCenter>83</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2012-w02-fg4-eng.gif

flu1112-leg4-eng.gif

Text equivalent for figure 4Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2012-w02-fg5-eng.gif

Text equivalent for figure 5Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 89 influenza viruses (35 A/H3N2, 19 A/H1N1 and 35 B). All 35 A/H3N2 viruses (from BC, AB, SK & ON) are antigenically related to A/Perth/16/2009. All 19 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Fourteen of the influenza B viruses characterized (from BC, AB, ON, QC & NB) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The other 21 influenza B viruses (from <ABBR title="British Columbia">BC</ABBR>, <ABBR title=Alberta>AB</ABBR>, <ABBR title=Ontario>ON</ABBR>, <ABBR title=Qu?bec>QC</ABBR> & <ABBR title=Newfoundland>NL</ABBR>) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 89
2012-w02-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.
Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 79 influenza viruses (34 A/H3N2, 16 A/H1N1 and 29 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 79 viruses were susceptible to oseltamivir and zanamivir. A total of 54 influenza A viruses (45 H3N2 and 9 H1N1) were tested for amantadine resistance and all 54 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH rowSpan=2 scope=col>Virus type and subtype</TH><TH colSpan=2 scope=colgroup>Oseltamivir</TH><TH colSpan=2 scope=colgroup>Zanamivir</TH><TH colSpan=2 scope=colgroup>Amantadine</TH></TR><TR class=bg-colour-yellow><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH><TH scope=col># tested</TH><TH scope=col># resistant (%)</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=7 scope=row><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT><TBODY><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H3N2)</TH><TD class=alignCenter>34</TD><TD class=alignCenter>0</TD><TD class=alignCenter>34</TD><TD class=alignCenter>0</TD><TD class=alignCenter>45</TD><TD class=alignCenter>45 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>A (H1N1)</TH><TD class=alignCenter>16</TD><TD class=alignCenter>0</TD><TD class=alignCenter>16</TD><TD class=alignCenter>0</TD><TD class=alignCenter>9</TD><TD class=alignCenter>9 (100%)</TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>B</TH><TD class=alignCenter>29</TD><TD class=alignCenter>0</TD><TD class=alignCenter>29</TD><TD class=alignCenter>0</TD><TD class=alignCenter>NA<SUP>*</SUP></TD><TD class=alignCenter>NA<SUP>*</SUP></TD></TR><TR><TH class="alignLeft bg-colour-blue" scope=row>TOTAL</TH><TD class=alignCenter>79</TD><TD class=alignCenter>0</TD><TD class=alignCenter>79</TD><TD class=alignCenter>0</TD><TD class=alignCenter>54</TD><TD class=alignCenter>54 (100%)</TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate declined to 25.4 ILI consultations per 1,000 patient visits in week 02 and is within the expected levels for this time of year (Figure 7). Compared to week 01, the ILI consultation rates declined across all age groups except for a slight increase in the ILI rate for those > 65 years old. The highest consultation rates this week were observed in children under 5 (39.9/1,000 visits) and those 5 to 19 years old (34.9/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2012-w02-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 02, three new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. Two hospitalizations were due to influenza A (in AB due to H3N2 & in QC due to H1N1) and 1 was due to influenza B (in ON).

To date this season, 34 cases have been reported (from BC, AB, SK, ON & QC); 23 (67.6%) were due to influenza A and 11 (32.4%) were due to influenza B. The proportion of cases by age group is as follows: 20.6% among infants <6 months of age; 17.6% among children 6-23 months of age; 41.2% were between 2-4 years; 8.8% were between 5-9 years; and 11.8% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 02, 15 new laboratory-confirmed influenza-associated adult hospitalizations were reported: 5 in AB & 10 in ON. Two of the five cases in AB required ICU admission; both due to H3N2 virus infection.

To date this season, 38 influenza-associated adult hospitalizations have been reported from two provinces (AB & ON). The proportion of cases by age group is as follows: 32% were in those 20-44 years of age; 24% were in those 45-64 years of age and 45% were in those > 65 years.

Note: Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK. ICU admissions are not reported in ON.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w02_12/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 3

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 3

January 15 to January 21 2012 (Week 03)

Posted 2012-01-27
For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w03_12/pdf/fw2012-03-eng.pdf" jQuery1327704824521="2">2011-2012 FluWatch: January 15 to January 21, 2012 (Week 03) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity remains similar to the previous week; activity remains low in certain areas (i.e. Atlantic region and the Territories)
  • Five regions reported localized influenza activity and 17 regions reported sporadic influenza activity
  • Seven outbreaks of influenza were reported this week (4 in <ABBR title="long-term care facilities">LTCF</ABBR>s, 1 in a hospital and 2 other)
  • In week 03, 127 laboratory detections of influenza were reported (68 A/H3, 9 A(H1N1)pdm09, 18 A unsubtyped and 32 B)
  • Eleven influenza-associated hospitalizations were reported this week (1 paediatric and 10 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate declined this week compared to previous weeks but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 03, five surveillance regions (within <ABBR title="British Columbia ">BC</ABBR>, <ABBR title=Alberta>AB</ABBR> & <ABBR title=Ontario>ON</ABBR>) reported localized activity and 17 regions (within BC, AB, <ABBR title=Saskatchewan>SK</ABBR>, <ABBR title=Manitoba>MB</ABBR>, ON & <ABBR title=Quebec>QC</ABBR>) reported sporadic influenza activity (see Figure 1). Seven outbreaks of influenza were reported this week: 4 in long-term care facilities (1 in BC & 3 in ON), 1 in a hospital (AB) and 2 others (AB) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 3




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1Map of overall Influenza activity level by province and territory, Canada
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2012-w03-fg2-eng.gif

flu1112-leg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2Number of influenza surveillance regions? reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2012-w03-fg3-eng.gif

flu1112-leg3-eng.gif

Text equivalent for figure 3Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

Top of Page
Influenza and Other Respiratory Virus Detections

In week 03, the proportion of positive influenza tests remained similar to the previous week (3.3% or 127/3,854) (Figure 4 & 5). Although the majority of influenza virus detections since the start of the season were for influenza A viruses, the number of influenza B virus detections have been increasing over recent weeks.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 78.6% influenza A (74% - A(H3); 8% - A(H1N1)pdm09; 18% - unsubtyped) and 21.4% influenza B (Table 1).
Detailed information on age and type/subtype were received on 642 cases this season to date (Table 2). The proportions of cases by age group are as follows: 20.9% were < 5 years; 10.1% were between 5-19 years; 24.9% were between 20-44 years; 14.3% were between 45-64 years of age; and 29.8% were ≥ 65 years.
In week 03, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> increased slightly from the previous week (18.3%) and remains the most prevalent among the other respiratory viruses being detected. The highest percent positives for RSV were reported in <ABBR title="Nova Scotia">NS</ABBR>, ON & QC (range 21%-26%). The proportion of positive tests for the other respiratory viruses declined from the previous week (rhinovirus-5.7%; parainfluenza-2.8%; adenovirus-3.3%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-5.4%; coronavirus-5.1%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(January 15 to January 21, 2012) </TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to January 21, 2012) </TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A
( <ABBR title=unsubtyped>Un S</ABBR>)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A
(Un S) * </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD id=ar13 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals. </TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1><ABBR title="British Columbia ">BC</ABBR> </TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">21 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">21 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">200 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">199 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">11 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1><ABBR title=Alberta>AB</ABBR> </TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">31 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">27 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">4 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">123 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">114 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">2 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">7 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">13 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1><ABBR title=Saskatchewan>SK</ABBR> </TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">11 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">11 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">64 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">58 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">6 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1><ABBR title=Manitoba>MB</ABBR> </TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">3 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">2 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">1 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">1 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">5 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">2 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">3 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">1 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1><ABBR title=Ontario>ON</ABBR> </TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">15 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">6 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">8 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">1 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">14 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">85 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">34 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">39 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">12 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">58 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1><ABBR title=Quebec>QC</ABBR>
</TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">13 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">1 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">12 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">9 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">78 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">3 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">4 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">71 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">43 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1><ABBR title="New Brunswick">NB</ABBR>
</TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">1 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1><ABBR title="Nova Scotia ">NS</ABBR>
</TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1><ABBR title="Prince Edward Island ">PE</ABBR>
</TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1><ABBR title="Newfoundland/Labrador ">NL</ABBR>
</TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">1 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">7 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">1 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">1 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">23 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">95 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">68 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">9 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">18 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">32 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">556 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">411 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">46 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">99 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">151 </TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012 * </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
(January 15 to January 21, 2012 (Week 03))</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to January 21, 2012)</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A</TH><TH id=bc7 headers=bc1>B</TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A</TH><TH id=bc14 headers=bc8>B</TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total</TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1</TH><TH id=bc5 headers="bc1 bc2">A/H3N2</TH><TH id=bc6 headers="bc1 bc2">A unsubtyped</TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total</TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1</TH><TH id=bc12 headers="bc8 bc9">A/H3N2</TH><TH id=bc13 headers="bc8 bc9">A unsubtyped</TH><TH headers="bc8 bc14">Total</TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">11 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">1 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">5 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">5 </TD><TD class=alignRight headers="br1 br2 bc1 bc7">2 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">100 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">23 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">57 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">20 </TD><TD class=alignRight headers="br1 br2 bc8 bc14">34 </TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">6 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">6 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc7">1 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">55 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">2 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">50 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">3 </TD><TD class=alignRight headers="br1 br3 bc8 bc14">10 </TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">14 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">12 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">2 </TD><TD class=alignRight headers="br1 br4 bc1 bc7">5 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">136 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">8 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">106 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">22 </TD><TD class=alignRight headers="br1 br4 bc8 bc14">24 </TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">12 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">7 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">5 </TD><TD class=alignRight headers="br1 br5 bc1 bc7">3 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">78 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">3 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">62 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">13 </TD><TD class=alignRight headers="br1 br5 bc8 bc14">14 </TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">24 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">18 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">6 </TD><TD class=alignRight headers="br1 br6 bc1 bc7">2 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">168 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">4 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">138 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">26 </TD><TD class=alignRight headers="br1 br6 bc8 bc14">23 </TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">67 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">1 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">48 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">18 </TD><TD class=alignRight headers="br1 br8 bc1 bc7">13 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">537 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">40 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">413 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">84 </TD><TD class=alignRight headers="br1 br8 bc8 bc14">105 </TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2012-w03-fg4-eng.gif

flu1112-leg4-eng.gif

Text equivalent for figure 4Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2012-w03-fg5-eng.gif

Text equivalent for figure 5Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (NML) has antigenically characterized 107 influenza viruses (40 A/H3N2, 24 A/H1N1 and 43 B). All 40 A/H3N2 viruses (from BC, AB, SK & ON) are antigenically related to A/Perth/16/2009. All 24 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Twenty-five of the 43 influenza B viruses characterized (from BC, AB, ON, QC & NL) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The remaining 18 influenza B viruses (from BC, AB, ON, QC & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 107
2012-w03-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.

Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 101 influenza viruses (37 A/H3N2, 22 A/H1N1 and 42 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 101 viruses were susceptible to oseltamivir and zanamivir. A total of 71 influenza A viruses (51 H3N2 and 20 H1N1) were tested for amantadine resistance and all 71 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=cr1 rowSpan=2>Virus type and subtype </TH><TH id=cc1 colSpan=2>Oseltamivir </TH><TH id=cc4 colSpan=2>Zanamivir </TH><TH id=cc7 colSpan=2>Amantadine </TH></TR><TR class=bg-colour-yellow><TH id=cc2 headers=cc1># tested </TH><TH id=cc3 headers=cc1># resistant (%) </TH><TH id=cc5 headers=cc4># tested </TH><TH id=cc6 headers=cc4># resistant (%) </TH><TH id=cc8 headers=cc7># tested </TH><TH id=cc9 headers=cc7># resistant (%) </TH></TR></THEAD><TFOOT><TR><TD id=cr6 class=fontSize85 colSpan=7 headers=cr1><SUP>*</SUP> NA ? not applicable</TD></TR></TFOOT><TBODY><TR><TH id=cr2 class="alignLeft bg-colour-blue" headers=cr1>A (H3N2) </TH><TD class=alignRight headers="cr1 cr2 cc1 cc2">37 </TD><TD class=alignRight headers="cr1 cr2 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr2 cc4 cc5">37 </TD><TD class=alignRight headers="cr1 cr2 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr2 cc7 cc8">51 </TD><TD class=alignRight headers="cr1 cr2 cc7 cc9">51 (100%) </TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1) </TH><TD class=alignRight headers="cr1 cr3 cc1 cc2">22 </TD><TD class=alignRight headers="cr1 cr3 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr3 cc4 cc5">22 </TD><TD class=alignRight headers="cr1 cr3 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr3 cc7 cc8">20 </TD><TD class=alignRight headers="cr1 cr3 cc7 cc9">20 (100%) </TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B </TH><TD class=alignRight headers="cr1 cr4 cc1 cc2">42 </TD><TD class=alignRight headers="cr1 cr4 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr4 cc4 cc5">42 </TD><TD class=alignRight headers="cr1 cr4 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr4 cc7 cc8">NA <SUP>* </SUP></TD><TD class=alignRight headers="cr1 cr4 cc7 cc9">NA <SUP>* </SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL </TH><TD class=alignRight headers="cr1 cr5 cc1 cc2">101</TD><TD class=alignRight headers="cr1 cr5 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr5 cc4 cc5">101</TD><TD class=alignRight headers="cr1 cr5 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr5 cc7 cc8">71 </TD><TD class=alignRight headers="cr1 cr5 cc7 cc9">71 (100%) </TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate declined slightly to 23.9 ILI consultations per 1,000 patient visits in week 03 and is within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (61.2/1,000 visits) and those 5 to 19 years old (37.7/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2012-w03-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 03, one new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalization was reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network from AB due to influenza A infection.

To date this season, 35 cases have been reported (from BC, AB, SK, ON & QC); 24 (68.6%) were due to influenza A and 11 (31.4%) were due to influenza B. The proportion of cases by age group is as follows: 20.0% among infants <6 months of age; 20.0% among children 6-23 months of age; 40.0% were between 2-4 years; 8.6% were between 5-9 years; and 11.4% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 03, 10 new laboratory-confirmed influenza-associated adult hospitalizations were reported: 7 in ON, 2 in AB and 1 in MB.
To date this season, 51 influenza-associated adult hospitalizations have been reported from three provinces (AB, MB & ON). The proportion of cases by age group is as follows: 27.5% were in those 20-44 years of age; 25.5% were in those 45-64 years of age and 47.0% were in those ≥ 65 years.

Note: Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK. ICU admissions are not reported in ON.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w03_12/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 4

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 4

January 22 to January 28, 2012 (Week 04)

Posted 2012-02-03 For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w04_12/pdf/fw2012-04-eng.pdf" jQuery1328307759299="2">2011-2012 FluWatch: January 22 to January 28, 2012 (Week 04) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

>> Help with PDF documents

Overall Influenza Summary
  • Influenza activity has increased in more regions compared to previous weeks
  • Seven regions reported localized influenza activity and 17 regions reported sporadic influenza activity
  • Eleven outbreaks of influenza were reported this week (7 in <ABBR title="long-term care facilities">LTCF</ABBR>s, 2 in schools and 2 others)
  • In week 04, 178 laboratory detections of influenza were reported (65 A/H3, 27 A(H1N1)pdm09, 43 A unsubtyped and 43 B)
  • Twenty-two influenza-associated hospitalizations were reported this week (3 paediatric and 19 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate increased this week compared to the previous two weeks but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 04, seven surveillance regions (within <ABBR title=Alberta>AB</ABBR>, <ABBR title=Saskatchewan>SK</ABBR> & <ABBR title=Ontario>ON</ABBR>) reported localized activity and 17 regions (within <ABBR title="British Columbia">BC</ABBR>, AB, <ABBR title=Manitoba>MB</ABBR>, <ABBR title=Quebec>QC</ABBR>, <ABBR title="New Brunswick ">NB</ABBR> & <ABBR title=Newfoundland/Labrador>NL</ABBR>) reported sporadic influenza activity (see Figure 1). Eleven outbreaks of influenza were reported this week: 7 in long-term care facilities (6 in ON & 1 in MB), 2 in schools (in SK & <ABBR title="Prince Edward Island ">PEI</ABBR>) and 2 others (in AB & ON) (Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 4




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1Map of overall Influenza activity level by province and territory, Canada
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2012-w04-fg2-eng.gif

flu1112-leg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2Number of influenza surveillance regions reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2012-w04-fg3-eng.gif

flu1112-leg3-eng.gif

Text equivalent for figure 3Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

Top of Page
Influenza and Other Respiratory Virus Detections

In week 04, the proportion of positive influenza tests increased slightly this week compared to the previous week (4.7% or 178/3,768) (Figure 4 & 5). Although the majority of influenza virus detections since the start of the season were for influenza A viruses, the number of influenza B virus detections have been increasing over recent weeks. To date this season, the provinces with the highest proportion of influenza B detections compared to influenza A detections include: NL, ON & QC.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 78.8% influenza A (69.3% - A(H3); 10.5% - A(H1N1)pdm09; 20.2% - unsubtyped) and 21.2% influenza B (Table 1).
Detailed information on age and type/subtype were received on 642 cases between August 28, 2011 to January 21, 2012 (Table 2). The proportions of cases by age group are as follows: 20.9% were < 5 years; 10.1% were between 5-19 years; 24.9% were between 20-44 years; 14.3% were between 45-64 years of age; and 29.8% were ≥ 65 years.
In week 03, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> declined slightly from the previous week (17.0%) but remains the most prevalent among the other respiratory viruses being detected. The highest percent positives for RSV were reported in NB, QC, NS & AB. The proportion of positive tests for the other respiratory viruses either remained similar to, or declined slightly from, the previous week (rhinovirus-5.7%; parainfluenza-2.1%; adenovirus-3.7%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-5.5%; coronavirus-6.4%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces </TH><TH id=ac1 colSpan=6>Weekly
(January 22 to January 28, 2012) </TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to January 28, 2012) </TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A </TH><TH id=ac8 headers=ac1>B </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A </TH><TH id=ac16 headers=ac9>B </TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total </TH><TH id=ac4 headers="ac1 ac2">A(H1) </TH><TH id=ac5 headers="ac1 ac2">A(H3) </TH><TH id=ac6 headers="ac1 ac2">Pand H1N1 </TH><TH id=ac7 class=noWrap headers="ac1 ac2">A
( <ABBR title=unsubtyped>Un S</ABBR>)* </TH><TH headers="ac1 ac8">Total </TH><TH id=ac11 headers="ac9 ac10">A Total </TH><TH id=ac12 headers="ac9 ac10">A(H1) </TH><TH id=ac13 headers="ac9 ac10">A(H3) </TH><TH id=ac14 headers="ac9 ac10">Pand H1N1 </TH><TH id=ac15 class=noWrap headers="ac9 ac10">A
(Un S) * </TH><TH headers="ac9 ac16">Total </TH></TR></THEAD><TFOOT><TR><TD id=ar13 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1><ABBR title="British Columbia ">BC</ABBR> </TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">21 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">21 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">6 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">221 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">220 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">17 </TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1><ABBR title=Alberta>AB</ABBR> </TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">42 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">26 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">4 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">12 </TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">2 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">169 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">148 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">6 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">15 </TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">15 </TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1><ABBR title=Saskatchewan>SK</ABBR> </TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">17 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">13 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">1 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">3 </TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">81 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">71 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">1 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">9 </TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1 </TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1><ABBR title=Manitoba>MB</ABBR> </TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">1 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">1 </TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">6 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">2 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">4 </TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">1 </TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1><ABBR title=Ontario>ON</ABBR> </TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">31 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">4 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">22 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">5 </TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">19 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">116 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">38 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">61 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">17 </TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">77 </TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1><ABBR title=Quebec>QC</ABBR>
</TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">23 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">1 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">22 </TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">10 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">104 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">4 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">4 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">96 </TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">53 </TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1><ABBR title="New Brunswick">NB</ABBR>
</TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">1 </TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1><ABBR title="Nova Scotia ">NS</ABBR>
</TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">0 </TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1><ABBR title="Prince Edward Island ">PE</ABBR>
</TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0 </TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1><ABBR title="Newfoundland/Labrador ">NL</ABBR>
</TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0 </TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">6 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0 </TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">22 </TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada </TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">135 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">65 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">27 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">43 </TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">43 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">697 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">483 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">73 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">141 </TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">187 </TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012 * </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
(January 22 to January 28, 2012 (Week 04))</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to January 28, 2012)</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A</TH><TH id=bc7 headers=bc1>B</TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A</TH><TH id=bc14 headers=bc8>B</TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total</TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1</TH><TH id=bc5 headers="bc1 bc2">A/H3N2</TH><TH id=bc6 headers="bc1 bc2">A unsubtyped</TH><TH headers="bc1 bc7">Total </TH><TH id=bc10 headers="bc8 bc9">A Total</TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1</TH><TH id=bc12 headers="bc8 bc9">A/H3N2</TH><TH id=bc13 headers="bc8 bc9">A unsubtyped</TH><TH headers="bc8 bc14">Total</TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Delays in the reporting of data may cause data to change retrospectively.
NOTE: this table has not been updated to reflect data received for week 04.</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5 </TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">11 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">1 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">5 </TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">5 </TD><TD class=alignRight headers="br1 br2 bc1 bc7">2 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">100 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">23 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">57 </TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">20 </TD><TD class=alignRight headers="br1 br2 bc8 bc14">34 </TD></TR><TR><TH id=br3 headers=br1>5-19 </TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">6 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">6 </TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br3 bc1 bc7">1 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">55 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">2 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">50 </TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">3 </TD><TD class=alignRight headers="br1 br3 bc8 bc14">10 </TD></TR><TR><TH id=br4 headers=br1>20-44 </TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">14 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">12 </TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">2 </TD><TD class=alignRight headers="br1 br4 bc1 bc7">5 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">136 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">8 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">106 </TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">22 </TD><TD class=alignRight headers="br1 br4 bc8 bc14">24 </TD></TR><TR><TH id=br5 headers=br1>45-64 </TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">12 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">7 </TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">5 </TD><TD class=alignRight headers="br1 br5 bc1 bc7">3 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">78 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">3 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">62 </TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">13 </TD><TD class=alignRight headers="br1 br5 bc8 bc14">14 </TD></TR><TR><TH id=br6 headers=br1>65+ </TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">24 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">18 </TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">6 </TD><TD class=alignRight headers="br1 br6 bc1 bc7">2 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">168 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">4 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">138 </TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">26 </TD><TD class=alignRight headers="br1 br6 bc8 bc14">23 </TD></TR><TR><TH id=br7 headers=br1>Unknown </TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0 </TD><TD class=alignRight headers="br1 br7 bc1 bc7">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0 </TD><TD class=alignRight headers="br1 br7 bc8 bc14">0 </TD></TR><TR><TH id=br8 headers=br1>Total </TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">67 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">1 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">48 </TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">18 </TD><TD class=alignRight headers="br1 br8 bc1 bc7">13 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">537 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">40 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">413 </TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">84</TD><TD class=alignRight headers="br1 br8 bc8 bc14">105 </TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2012-w04-fg4-eng.gif

flu1112-leg4-eng.gif

Text equivalent for figure 4Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2012-w04-fg5-eng.gif

Text equivalent for figure 5Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 150 influenza viruses (47 A/H3N2, 37 A/H1N1 and 66 B). All 47 A/H3N2 viruses (from BC, AB, SK, ON & QC) are antigenically related to A/Perth/16/2009. All 37 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Forty of the 66 influenza B viruses characterized (from BC, AB, ON, QC & NL) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The remaining 26 influenza B viruses (from BC, AB, ON, QC & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 150
2012-w04-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.

Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 143 influenza viruses (47 A/H3N2, 35 A/H1N1 and 61 B) for resistance to oseltamivir (by phenotypic assay and/or sequencing) and for resistance to zanamivir (by phenotypic assay) and it was found that all 143 viruses were susceptible to oseltamivir and zanamivir. A total of 80 influenza A viruses (56 H3N2 and 24 H1N1) were tested for amantadine resistance and all 80 were found to be resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=cr1 rowSpan=2>Virus type and subtype </TH><TH id=cc1 colSpan=2>Oseltamivir </TH><TH id=cc4 colSpan=2>Zanamivir </TH><TH id=cc7 colSpan=2>Amantadine </TH></TR><TR class=bg-colour-yellow><TH id=cc2 headers=cc1># tested </TH><TH id=cc3 headers=cc1># resistant (%) </TH><TH id=cc5 headers=cc4># tested </TH><TH id=cc6 headers=cc4># resistant (%) </TH><TH id=cc8 headers=cc7># tested </TH><TH id=cc9 headers=cc7># resistant (%) </TH></TR></THEAD><TFOOT><TR><TD id=cr6 class=fontSize85 colSpan=7 headers=cr1><SUP>*</SUP> NA - not applicable</TD></TR></TFOOT><TBODY><TR><TH id=cr2 class="alignLeft bg-colour-blue" headers=cr1>A (H3N2) </TH><TD class=alignRight headers="cr1 cr2 cc1 cc2">47 </TD><TD class=alignRight headers="cr1 cr2 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr2 cc4 cc5">47 </TD><TD class=alignRight headers="cr1 cr2 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr2 cc7 cc8">56</TD><TD class=alignRight headers="cr1 cr2 cc7 cc9">56 (100%) </TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1) </TH><TD class=alignRight headers="cr1 cr3 cc1 cc2">35</TD><TD class=alignRight headers="cr1 cr3 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr3 cc4 cc5">35</TD><TD class=alignRight headers="cr1 cr3 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr3 cc7 cc8">24 </TD><TD class=alignRight headers="cr1 cr3 cc7 cc9">24 (100%) </TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B </TH><TD class=alignRight headers="cr1 cr4 cc1 cc2">61</TD><TD class=alignRight headers="cr1 cr4 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr4 cc4 cc5">61</TD><TD class=alignRight headers="cr1 cr4 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr4 cc7 cc8">NA <SUP>* </SUP></TD><TD class=alignRight headers="cr1 cr4 cc7 cc9">NA <SUP>* </SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL </TH><TD class=alignRight headers="cr1 cr5 cc1 cc2">143</TD><TD class=alignRight headers="cr1 cr5 cc1 cc3">0 </TD><TD class=alignRight headers="cr1 cr5 cc4 cc5">143</TD><TD class=alignRight headers="cr1 cr5 cc4 cc6">0 </TD><TD class=alignRight headers="cr1 cr5 cc7 cc8">80</TD><TD class=alignRight headers="cr1 cr5 cc7 cc9">80 (100%) </TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

Although the national ILI consultation rate increased to 32.3 ILI consultations per 1,000 patient visits in week 04, it is still within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in children under 5 (68.4/1,000 visits) and those 5 to 19 years old (50.5/1,000).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2012-w04-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths
In week 04, three new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. Two of the hospitalizations were due to influenza A(H3N2) (from AB) and one was due to influenza B (from BC).
To date this season, 39 influenza-associated paediatric hospitalizations have been reported (from BC, AB, SK, ON & QC); 27 (69.2%) were due to influenza A and 12 (30.8%) were due to influenza B. The proportion of cases by age group is as follows: 22.5% among infants <6 months of age; 17.9% among children 6-23 months of age; 40.1% were between 2-4 years; 7.7% were between 5-9 years; and 12.8% were between 10-16 years.

Adult Influenza Hospitalizations and Deaths
In week 04, 19 new laboratory-confirmed influenza-associated adult hospitalizations were reported: 5 in ON, 12 in AB, 1 in NL and 1 hospitalization requiring ICU admission in SK. In addition, two influenza-associated (influenza B) laboratory confirmed deaths were reported (in ON & MB) in week 04 in adults ≥ 65 years old.

To date this season, 70 influenza-associated adult hospitalizations have been reported from four provinces (AB, SK, MB & ON). The proportion of cases by age group is as follows: 24.6% were in those 20-44 years of age; 27.5% were in those 45-64 years of age and 47.8% were in those ≥ 65 years.

Note: The reason for hospitalization or cause of death does not have to be attributable to influenza in order to be reported. Influenza-associated adult hospitalizations are not reported to PHAC by the following Provinces: BC, QC, & NB. Only hospitalizations that require intensive medical care are reported by SK. <ABBR title="Intensive-Care Unit">ICU</ABBR> admissions are not reported in ON.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w04_12/index-eng.php
 
Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 5

Re: Canada FluWatch Weekly Reports 2011-2012 Season Week 5

January 29 to February 4, 2012 (Week 05)

Posted 2012-02-10 For readers interested in the <ABBR title="Portable Document Format">PDF</ABBR> version, the document is available for downloading or viewing:
<A title="Flu Watch (Version PDF, 113 KB - 6 pages)" href="http://www.phac-aspc.gc.ca/fluwatch/11-12/w05_12/pdf/fw2012-05-eng.pdf" jQuery1328910326104="2">2011-2012 FluWatch: January 29 to February 4, 2012 (Week 05) (<ABBR title="Portable Document Format">PDF</ABBR> Version - 113 <ABBR title=Kilobytes>KB</ABBR> - 6 pages)

?? Help with PDF documents


Overall Influenza Summary
  • Influenza activity in Canada continues to increase gradually; activity remains low in the Territories and in a few other regions across the country
  • Six regions reported localized influenza activity and 23 regions reported sporadic influenza activity
  • Nine outbreaks of influenza were reported this week (7 in <ABBR title="long-term care facilities">LTCF</ABBR>s and 2 others)
  • In week 05, 230 laboratory detections of influenza were reported (83 A/H3, 24 A(H1N1)pdm09, 43 A unsubtyped and 80 B)
  • The percent positive for influenza B detections has been increasing over the past several weeks; to date, 76% of all influenza detections were for influenza A viruses and 24% for influenza B
  • Twenty-four influenza-associated hospitalizations were reported this week (4 paediatric and 20 adult)
  • The national <ABBR title="Influenza-like illness">ILI</ABBR> consultation rate increased this week compared to the previous three weeks but remains within expected levels for this time of year.
<!-- END Menu container | FIN de conteneur du menu --><!-- ############################################# --><!-- CONTENT TITLE BEGINS | DEBUT DU TITRE DU CONTENU -->Influenza Activity (geographic spread) and Outbreaks

In week 05, six surveillance regions (within <ABBR title="British Columbia ">BC</ABBR>, <ABBR title=Saskatchewan>SK</ABBR>, <ABBR title=Ontario>ON</ABBR>, & <ABBR title=Newfoundland/Labrador>NL</ABBR>) reported localized activity and 23 regions (within BC, <ABBR title=Alberta>AB</ABBR>, SK, <ABBR title=Manitoba>MB</ABBR>, ON, <ABBR title=Quebec>QC</ABBR>, <ABBR title="New Brunswick ">NB</ABBR>, & NL) reported sporadic influenza activity (see Figure 1). Nine outbreaks of influenza were reported this week: 7 in long-term care facilities (5 in ON, 1 in BC & 1 in SK) and 2 others (in ON & NL)(Figure 3).
Figure 1. Map of overall Influenza activity level by province and territory,
Canada, Week 5




right_ofmap.gif





Note: Influenza activity levels, as represented on this map, are assigned and reported by Provincial and Territorial Ministries of Health, based on laboratory confirmations, sentinel ILI rates (see graphs and tables) and reported outbreaks. Please refer to detailed definitions on the last page. For areas where no data is reported, late reports from these provinces and territories will appear on the FluWatch website.
Text equivalent for figure 1Map of overall Influenza activity level by province and territory, Canada
Figure 2. Number of influenza surveillance regions<SUP title="sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in">?</SUP> reporting widespread or
localized influenza activity, Canada, by report week, 2011-2012 (N=56)
2012-w05-fg2-eng.gif

flu1112-leg2-eng.gif

? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
Text equivalent for figure 2Number of influenza surveillance regions reporting widespread or localized influenza activity, Canada, by report week, 2011-2012 (N=56)
Figure 3. Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012
2012-w05-fg3-eng.gif

flu1112-leg3-eng.gif

Text equivalent for figure 3Overall Number of Influenza Outbreaks, Canada, by Report Week, 2011-2012

Top of Page
Influenza and Other Respiratory Virus Detections

In week 05, the proportion of positive influenza tests increased this week compared to the previous week (6.4% or 230/3,595) (Figure 4 & 5). Of the 230 positive influenza detections this week, 150 (65%) were positive for influenza A and 80 (35%) were positive for influenza B. To date this season, the provinces with the highest proportion of influenza B detections compared to influenza A detections include: NL, NB, ON & QC.
The proportion of influenza virus detections by type/subtype this season to date is as follows: 75.8% influenza A (67.4% - A(H3); 12.2% - A(H1N1)pdm09; 20.4% - unsubtyped) and 24.2% influenza B (Table 1).
Detailed information on age and type/subtype were received on 1,004 cases to date this season (Table 2). The proportions of cases by age group are as follows: 21.9% were < 5 years; 11.6% were between 5-19 years; 24.8% were between 20-44 years; 14.8% were between 45-64 years of age; 26.7% were ≥ 65 years; and 0.2% with age unknown.
In week 05, the proportion of tests positive for <ABBR title="Respiratory syncytial virus">RSV</ABBR> was 18.2% (and has fluctuated between 17-19% since week 01) and remains the most prevalent among the other respiratory viruses being detected. The highest percent positives for RSV this week were reported in ON, QC and the Atlantic Region. The proportion of positive tests for the other respiratory viruses all declined slightly from the previous week (rhinovirus-5.4%; parainfluenza-2.0%; adenovirus-2.7%; <ABBR title="Human metapneumovirus">hMPV</ABBR>-5.2%; coronavirus-5.9%) (Figure 5). For more details, see the weekly Respiratory Virus Detections in Canada report.
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION class=alignCenter>Table 1: Weekly & Cumulative numbers of positive influenza specimens
by Provincial Laboratories, Canada, 2011-2012
</CAPTION><THEAD><TR class=bg-colour-blue><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
(January 29 to February 4, 2012)
</TH><TH id=ac9 colSpan=6>Cumulative
(August 29, 2010 to February 4, 2012)
</TH></TR><TR class=bg-colour-blue><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>B</TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>B</TH></TR><TR class=bg-colour-blue><TH id=ac3 headers="ac1 ac2">A Total</TH><TH id=ac4 headers="ac1 ac2">A(H1)</TH><TH id=ac5 headers="ac1 ac2">A(H3)</TH><TH id=ac6 headers="ac1 ac2">Pand H1N1</TH><TH id=ac7 class=noWrap headers="ac1 ac2">A
( <ABBR title=unsubtyped>Un S</ABBR>)*
</TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers="ac9 ac10">A Total</TH><TH id=ac12 headers="ac9 ac10">A(H1)</TH><TH id=ac13 headers="ac9 ac10">A(H3)</TH><TH id=ac14 headers="ac9 ac10">Pand H1N1</TH><TH id=ac15 class=noWrap headers="ac9 ac10">A
(Un S) *
</TH><TH headers="ac9 ac16">Total</TH></TR></THEAD><TFOOT><TR><TD id=ar13 class=fontSize85 colSpan=13 headers=ar1>* Unsubtyped: The specimen was typed as influenza A, but no test for subtyping was performed. Specimens from NT, YT, and NU are sent to reference laboratories in other provinces. Note: Weekly data is based on week of positive lab detection. Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.</TD></TR></TFOOT><TBODY><TR><TH id=ar2 class=bg-colour-blue headers=ar1><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac3">25</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac5">21</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">4</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">5</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">252</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">242</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">10</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">22</TD></TR><TR><TH id=ar3 class=bg-colour-blue headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">26</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">21</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">5</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">4</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">195</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">177</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">8</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">10</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">19</TD></TR><TR><TH id=ar4 class=bg-colour-blue headers=ar1><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">33</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">26</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac6">2</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac7">5</TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">114</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">97</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">3</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">14</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-blue headers=ar1><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac3">3</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac5">2</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar5 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar5 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">9</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">4</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">5</TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">2</TD></TR><TR><TH id=ar6 class=bg-colour-blue headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">30</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">12</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">14</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">4</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">43</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">146</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">50</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">75</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">21</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">120</TD></TR><TR><TH id=ar7 class=bg-colour-blue headers=ar1><ABBR title=Quebec>QC</ABBR>

</TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">31</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac6">4</TD><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac7">27</TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">20</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">135</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">4</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">8</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">123</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">73</TD></TR><TR><TH id=ar8 class=bg-colour-blue headers=ar1><ABBR title="New Brunswick">NB</ABBR>

</TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">2</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac5">1</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar8 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac11">2</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac13">1</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar8 ac9 ac10 ac15">1</TD><TD class=alignRight headers="ar1 ar8 ac9 ac16">2</TD></TR><TR><TH id=ar9 class=bg-colour-blue headers=ar1><ABBR title="Nova Scotia ">NS</ABBR>

</TH><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar9 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar9 ac9 ac16">1</TD></TR><TR><TH id=ar10 class=bg-colour-blue headers=ar1><ABBR title="Prince Edward Island ">PE</ABBR>

</TH><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar10 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac11">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac13">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar10 ac9 ac16">0</TD></TR><TR><TH id=ar11 class=bg-colour-blue headers=ar1><ABBR title="Newfoundland/Labrador ">NL</ABBR>

</TH><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac3">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac5">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">5</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">1</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">1</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac15">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">33</TD></TR><TR><TH id=ar12 class=bg-colour-blue headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">150</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">83</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">24</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">43</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">80</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">854</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">576</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">104</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">174</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">273</TD></TR></TBODY></TABLE>
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 2. Weekly & Cumulative numbers of positive influenza specimens by age groups
reported through case-based laboratory reporting, Canada, 2011-2012 *
</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
(January 29 to February 4, 2012 (Week 05))
</TH><TH id=bc8 colSpan=5>Cumulative
(Aug. 29, 2010 to February 4, 2012)
</TH></TR><TR class=bg-colour-yellow><TH id=bc2 colSpan=4 headers=bc1>Influenza A</TH><TH id=bc7 headers=bc1>B</TH><TH id=bc9 colSpan=4 headers=bc8>Influenza A</TH><TH id=bc14 headers=bc8>B</TH></TR><TR class=bg-colour-yellow><TH id=bc3 headers="bc1 bc2">A Total</TH><TH id=bc4 headers="bc1 bc2">Pandemic H1N1</TH><TH id=bc5 headers="bc1 bc2">A/H3N2</TH><TH id=bc6 headers="bc1 bc2">A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers="bc8 bc9">A Total</TH><TH id=bc11 headers="bc8 bc9">Pandemic H1N1</TH><TH id=bc12 headers="bc8 bc9">A/H3N2</TH><TH id=bc13 headers="bc8 bc9">A unsubtyped</TH><TH headers="bc8 bc14">Total</TH></TR></THEAD><TFOOT><TR><TD id=br9 class=fontSize85 colSpan=11 headers=br1>* Please note that this table reflects the number of specimens for which demographic information was reported. These represent a subset of all positive influenza cases reported. Five provinces have reported detailed case-by-case data since the beginning of the season (BC, AB, SK,MB and ON).
Delays in the reporting of data may cause data to change retrospectively.
</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">14</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">8</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">6</TD><TD class=alignRight headers="br1 br2 bc1 bc7">11</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">156</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">32</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">87</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">37</TD><TD class=alignRight headers="br1 br2 bc8 bc14">64</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">8</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">5</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">3</TD><TD class=alignRight headers="br1 br3 bc1 bc7">9</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">88</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">7</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">73</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">8</TD><TD class=alignRight headers="br1 br3 bc8 bc14">28</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">29</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">1</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">12</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">16</TD><TD class=alignRight headers="br1 br4 bc1 bc7">7</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">208</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">11</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">145</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">52</TD><TD class=alignRight headers="br1 br4 bc8 bc14">41</TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">15</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">3</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">8</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">4</TD><TD class=alignRight headers="br1 br5 bc1 bc7">4</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">130</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">13</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">86</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">31</TD><TD class=alignRight headers="br1 br5 bc8 bc14">19</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">20</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">1</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">14</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">5</TD><TD class=alignRight headers="br1 br6 bc1 bc7">10</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">220</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">9</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">182</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">29</TD><TD class=alignRight headers="br1 br6 bc8 bc14">48</TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">1</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">1</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">0</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br7 bc1 bc7">0</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">2</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">1</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br7 bc8 bc14">0</TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">87</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">6</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">47</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">34</TD><TD class=alignRight headers="br1 br8 bc1 bc7">41</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">804</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">73</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">574</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">157</TD><TD class=alignRight headers="br1 br8 bc8 bc14">200</TD></TR></TBODY></TABLE>

Top of Page
Figure 4. Influenza tests reported and percentage of tests positive, Canada,
by report week, 2011-2012
2012-w05-fg4-eng.gif

flu1112-leg4-eng.gif

Text equivalent for figure 4Influenza tests reported and percentage of tests positive, Canada, by report week, 2011-2012
Figure 5. Percent positive influenza tests, compared to other respiratory viruses,
Canada, by reporting week, 2011-2012
2012-w05-fg5-eng.gif

Text equivalent for figure 5Percent positive influenza tests, compared to other respiratory viruses, Canada, by reporting week, 2011-2012

Top of Page
Influenza strain characterizations

Since the start of the season, the National Microbiology Laboratory (<ABBR title="National Microbiology Laboratory">NML</ABBR>) has antigenically characterized 179 influenza viruses (50 A/H3N2, 43 A/H1N1 and 86 B). All 50 A/H3N2 viruses (from BC, AB, SK, ON & QC) are antigenically related to A/Perth/16/2009. All 43 A/H1N1 viruses (from QC & ON) are antigenically related to A/California/07/2009. Fifty of the 86 influenza B viruses characterized (from BC, AB, SK, ON, QC & NL) are antigenically related to the vaccine strain B/Brisbane/60/2008 (Victoria lineage). The remaining 36 influenza B viruses (from BC, AB, ON, QC & NB) are antigenically related to the reference virus B/Wisconsin/01/2010-like, which belongs to the Yamagata lineage. (Figure 6)
Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 179
2012-w05-fg6-eng.gif

Note: The recommended components for the 2011-2012 Northern Hemisphere influenza vaccine include: A/Perth/16/2009 (H3N2), A/California/7/2009 (H1N1) and B/Brisbane/60/2008.
Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

Top of Page
Antiviral resistance

Since the beginning of the season, NML has tested 174 influenza viruses for resistance to oseltamivir (by phenotypic assay and/or sequencing) and 171 influenza viruses for resistance to zanamivir (by phenotypic assay) and it was found that all viruses tested were susceptible to oseltamivir and zanamivir. A total of 116 influenza A viruses (71 H3N2 and 45 H1N1) were tested for amantadine resistance; all but one influenza A(H3N2) virus tested were resistant. (Table 3)
<TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2011-2012 </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=cr1 rowSpan=2>Virus type and subtype</TH><TH id=cc1 colSpan=2>Oseltamivir</TH><TH id=cc4 colSpan=2>Zanamivir</TH><TH id=cc7 colSpan=2>Amantadine</TH></TR><TR class=bg-colour-yellow><TH id=cc2 headers=cc1># tested</TH><TH id=cc3 headers=cc1># resistant (%)</TH><TH id=cc5 headers=cc4># tested</TH><TH id=cc6 headers=cc4># resistant (%)</TH><TH id=cc8 headers=cc7># tested</TH><TH id=cc9 headers=cc7># resistant (%)</TH></TR></THEAD><TFOOT><TR><TD id=cr6 class=fontSize85 colSpan=7 headers=cr1><SUP>*</SUP> NA - not applicable</TD></TR></TFOOT><TBODY><TR><TH id=cr2 class="alignLeft bg-colour-blue" headers=cr1>A (H3N2)</TH><TD class=alignRight headers="cr1 cr2 cc1 cc2">48</TD><TD class=alignRight headers="cr1 cr2 cc1 cc3">0</TD><TD class=alignRight headers="cr1 cr2 cc4 cc5">48</TD><TD class=alignRight headers="cr1 cr2 cc4 cc6">0</TD><TD class=alignRight headers="cr1 cr2 cc7 cc8">71</TD><TD class=alignRight headers="cr1 cr2 cc7 cc9">70 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr1 cr3 cc1 cc2">41</TD><TD class=alignRight headers="cr1 cr3 cc1 cc3">0</TD><TD class=alignRight headers="cr1 cr3 cc4 cc5">41</TD><TD class=alignRight headers="cr1 cr3 cc4 cc6">0</TD><TD class=alignRight headers="cr1 cr3 cc7 cc8">45</TD><TD class=alignRight headers="cr1 cr3 cc7 cc9">45 (100%)</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr1 cr4 cc1 cc2">85</TD><TD class=alignRight headers="cr1 cr4 cc1 cc3">0</TD><TD class=alignRight headers="cr1 cr4 cc4 cc5">82</TD><TD class=alignRight headers="cr1 cr4 cc4 cc6">0</TD><TD class=alignRight headers="cr1 cr4 cc7 cc8">NA <SUP>* </SUP></TD><TD class=alignRight headers="cr1 cr4 cc7 cc9">NA <SUP>* </SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr1 cr5 cc1 cc2">143</TD><TD class=alignRight headers="cr1 cr5 cc1 cc3">0</TD><TD class=alignRight headers="cr1 cr5 cc4 cc5">171</TD><TD class=alignRight headers="cr1 cr5 cc4 cc6">0</TD><TD class=alignRight headers="cr1 cr5 cc7 cc8">116</TD><TD class=alignRight headers="cr1 cr5 cc7 cc9">115 (99.1%)</TD></TR></TBODY></TABLE>

Influenza-like Illness (ILI) Consultation Rate

The national ILI consultation rate increased to 35.8 ILI consultations per 1,000 patient visits in week 05 but still remains within the expected levels for this time of year (Figure 7). The highest consultation rates this week were observed in those 5 to 19 years old (64.7/1,000) and in children under 5 (64.5/1,000 visits).
Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
2012-w05-fg7-eng.gif

Note: No data available for mean rate in previous years for weeks 19 to 39 (1996-1997 through 2002-2003 seasons). Delays in the reporting of data may cause data to change retrospectively.
Text equivalent for figure 7Influenza-like illness (ILI) consultation rates, Canada, by report week, 2011-2012 compared to 1996/97 through to 2010/11 seasons (with pandemic data suppressed)
Severe Illness Surveillance

Paediatric Influenza Hospitalizations and Deaths

In week 05, four new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations were reported through the Immunization Monitoring Program Active (<ABBR title="Immunization Monitoring Program Active">IMPACT</ABBR>) network. One hospitalization was due to influenza A (unsubtyped) (in SK) and three were due to influenza B (in AB, ON & QC).

To date this season, 44 influenza-associated paediatric hospitalizations have been reported through IMPACT (from BC, AB, SK, ON & QC); 29 (65.9%) were due to influenza A and 15 (34.1%) were due to influenza B. The proportion of cases by age group is as follows: 20.5% among infants <6 months of age; 18.2% among children 6-23 months of age; 38.6% were between 2-4 years; 11.4% were between 5-9 years; and 11.4% were between 10-16 years.

Note: The number of hospitalizations reported through IMPACT represents a subset of all influenza-associate paediatric hospitalizations in Canada; therefore, the number of hospitalizations included in this report may differ from those reported by other Provincial and Territorial Health Authorities.

Adult Influenza Hospitalizations and Deaths

In week 05, 20 new laboratory-confirmed influenza-associated adult hospitalizations were reported: 12 in ON, 7 in AB and 1 in NL. In addition, two influenza-associated deaths were reported in ON in week 05; both adults were ≥ 65 years old and had influenza B infection.
To date this season, 90 influenza-associated adult hospitalizations have been reported from five provinces (AB, SK, MB, ON & NL). The proportion of cases by age group is as follows: 27.0% were in those 20-44 years of age; 28.1% were in those 45-64 years of age and 44.9% were in those ≥ 65 years. In addition, 4 adult influenza-associated deaths have been reported to date this season (from ON & MB); all had influenza B infection and all were > 65 years old.

.../
http://www.phac-aspc.gc.ca/fluwatch/11-12/w05_12/index-eng.php
 
You must log in or register to reply here.
Back
Top