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Canada FluWatch Weekly Reports 2012-2013 Season Weeks 33 & 34

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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Week 45

    Fluwatch Report: November 4 to November 10, 2012 (Week 45)

    Posted 2012-11-16For 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/12-13/w45_12/pdf/fw2012-45-eng.pdf">2012-2013 FluWatch report: November 4 to November 10, 2012 (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 in Canada increased compared to the previous week with more regions reporting increased activity, particularly in Ontario; however overall activity in Canada still remains relatively low, with the majority of regions of the country reporting no activity.
    • In week 45, a total of 106 laboratory detections of influenza were reported, of which 92.5% were for influenza A viruses, predominantly A(H3N2).
    • Eight influenza outbreaks were reported in week 45: 5 in long-term care facilities and 3 in other settings.
    • One influenza-associated hospitalization was reported through the IMPACT network, with influenza A from BC, and 16 influenza-associated hospitalizations in adults ≥20 years of age were reported through Aggregate surveillance.
    • The ILI consultation rate decreased slightly in week 45 but is within the expected level for this time of year.
    Influenza Activity (geographic spread) and Outbreaks

    In week 45, 1 region [in ON] reported widespread activity, 3 regions [in AB(1), and ON(2)] reported localized activity, 13 regions [in BC(2), AB(2), MB(1), ON(3), QC(4) and NB(1)] reported sporadic activity and the rest reported no activity (Figures 1 and 2). Eight new influenza outbreaks were reported in week 45: 5 in long-term care facilities [in AB(3) and ON(2)] and 3 in other settings [in ON ] (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 45





    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, 2012-2013 (N<SUP>*</SUP>=58)


    ?sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
    * Total number of influenza surveillance regions in Canada
    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, 2012-2013


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

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    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests increased from the previous week, from 2.8% in week 44 to 5.0% in week 45 (Figure 4 and link to figure 55). Among the influenza viruses detected this week (n=106), 92.5% were positive for influenza A viruses [of which 61.2% were A(H3), 6.1% were A(H1N1)pdm09, and 32.7% were A unsubtyped] and 7.5% for influenza B viruses (Table 1).
    Cumulative influenza virus detections by type/subtype to date are as follows: 91.9% influenza A [65.7% A(H3), 5.6% A(H1N1)pdm09 and 28.7% A(unsubtyped)] and 8.1% influenza B (Table 1).
    Detailed information on age and type/subtype was received for 168 cases to date this season (Table 2). The proportions of cases by age group were as follows: 13.7% were < 5 years; 8.3% were between 5-19 years; 14.3% were between 20-44 years; 15.5% were between 45-64 years of age; 48.2% were ≥ 65 years.
    The percentage positive for rhinovirus detections increased slightly from the previous week, from 17.1% in week 44 to 19.1% week 45; and remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 45 remained low, although several increased slightly compared to week 44: RSV 4.1%; parainfluenza 3.9%; adenovirus 2.3%; hMPV 0.2%; and coronavirus 2.3% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (November 4 to November 10, 2012)
    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to November 10, 2012)
    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B
    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B
    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*
    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*
    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></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">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">7</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">3</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">4</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">38</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">31</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">1</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">6</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">99</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">80</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">8</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">11</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">3</TD></TR><TR><TH id=ar4 class=bg-colour-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">1</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac5">1</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">4</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac13">1</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac15">3</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow 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">3</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">1</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac11">7</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">6</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac15">1</TD><TD class=alignRight headers="ar1 ar5 ac9 ac16">1</TD></TR><TR><TH id=ar6 class=bg-colour-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">28</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">22</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">4</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">2</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">3</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">87</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">63</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">5</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">19</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">6</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>

    </TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">24</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">24</TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">2</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">41</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac13">6</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">35</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">7</TD></TR><TR><TH id=ar8 class=bg-colour-yellow headers=ar1><ABBR title="New Brunswick">NB</ABBR>

    </TH><TD class=alignRight headers="ar1 ar8 ac1 ac2 ac3">1</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">1</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">1</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">1</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-yellow 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-yellow 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-yellow 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">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">2</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac13">2</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-yellow headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">98</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">60</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">6</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">32</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">8</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">251</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">165</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">14</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">72</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">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, 2012-2013 Table 2 note*
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (November 4 to November 10, 2012)
    </TH><TH id=bc8 colSpan=5>Cumulative
    (August 26, 2012 to November 10, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>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 id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">4</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">1</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">2</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">1</TD><TD class=alignRight headers="br1 br2 bc1 bc7">0</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">19</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">2</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">14</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">3</TD><TD class=alignRight headers="br1 br2 bc8 bc14">4</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">1</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">1</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">13</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">9</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">4</TD><TD class=alignRight headers="br1 br3 bc8 bc14">1</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">4</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">1</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">2</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">23</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">5</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">12</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">6</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">1</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">1</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">22</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">16</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">5</TD><TD class=alignRight headers="br1 br5 bc8 bc14">4</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">8</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">8</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">78</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">2</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">59</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">17</TD><TD class=alignRight headers="br1 br6 bc8 bc14">3</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">18</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">2</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">14</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">2</TD><TD class=alignRight headers="br1 br8 bc1 bc7">1</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">155</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">10</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">110</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">35</TD><TD class=alignRight headers="br1 br8 bc8 bc14">13</TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013


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

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    Influenza strain characterizations

    Since the start of the season, the National Microbiology Laboratory (NML) has antigenically characterized 9 influenza viruses [7 A(H3N2) and 2 B]. The 7 influenza A(H3N2) viruses (from BC, ON and QC) were antigenically similar to the vaccine strain A/Victoria/361/2011. Both of the influenza B viruses (from ON and QC) were antigenically similar to the vaccine strain B/Wisconsin/01/2010 (Yamagata lineage) (Figure 6).
    Figure 6. Influenza strain characterizations, Canada, 2012-2013, N = 9

    Note:The recommended components for the 2012-2013 Northern Hemisphere influenza vaccine include: an A/Victoria/361/2011 (H3N2)-like virus; an A/California/7/2009 (H1N1)pdm09-like virus; and a B/Wisconsin/1/2010-like virus.
    Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

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    Antiviral resistance

    Since the beginning of the season, NML has tested 9 influenza viruses [7 A(H3N2) and 2 B] for resistance to oseltamivir and zanamivir and it was found that all were sensitive to oseltamivir and zanamivir. A total of 21 influenza A(H3N2) viruses were tested for amantadine resistance and all 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, 2012-2013</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 class=fontSize85 colSpan=7><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=alignCenter headers="cr2 cc2">7</TD><TD class=alignCenter headers="cr2 cc3">0</TD><TD class=alignCenter headers="cr2 cc5">7</TD><TD class=alignCenter headers="cr2 cc6">0</TD><TD class=alignCenter headers="cr2 cc8">21</TD><TD class=alignCenter headers="cr2 cc9">21 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignCenter headers="cr3 cc2">0</TD><TD class=alignCenter headers="cr3 cc3">0</TD><TD class=alignCenter headers="cr3 cc5">0</TD><TD class=alignCenter headers="cr3 cc6">0</TD><TD class=alignCenter headers="cr3 cc8">0</TD><TD class=alignCenter headers="cr3 cc9">0</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignCenter headers="cr4 cc2">2</TD><TD class=alignCenter headers="cr4 cc3">0</TD><TD class=alignCenter headers="cr4 cc5">2</TD><TD class=alignCenter headers="cr4 cc6">0</TD><TD class=alignCenter headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignCenter headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignCenter headers="cr5 cc2">9</TD><TD class=alignCenter headers="cr5 cc3">0</TD><TD class=alignCenter headers="cr5 cc5">9</TD><TD class=alignCenter headers="cr5 cc6">0</TD><TD class=alignCenter headers="cr5 cc8">21</TD><TD class=alignCenter headers="cr5 cc9">21 (100%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national influenza-like-illness (ILI) consultation rate in week 45 decreased from the previous week from 22.2 to 19.1 ILI consultations per 1,000 patient visits; but remains within the expected levels for this time of year (Figure 7). The highest consultation rates were observed in children 5-19 years of age (31.3/1,000) and adults 20-64 years of age (17.6/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)



    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)

    In week 45, one new laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalization was reported by the Immunization Monitoring Program Active (IMPACT) network. The case was reported in BC, in a child 10-16 years of age with unsubtyped influenza A.

    Since the start of the 2012-13 season, a total of three laboratory-confirmed influenza-associated paediatric hospitalizations have been reported by the IMPACT network. Two cases were between 10-16 years of age, and one between 5-9 years of age. In all three cases, influenza A was detected [two A(H3N2), one influenza A(unsubtyped)]. One case is reported to have had underlying conditions, and this case was admitted to the ICU.
    Note: The number of hospitalizations reported through IMPACT represents a subset of all influenza-associate paediatric hospitalizations in Canada.

    Influenza Hospitalizations and Deaths (Aggregate Surveillance System<SUP>*</SUP>)

    In week 45, 20 laboratory-confirmed influenza A-associated hospitalizations were reported [ON(9), AB(11)]. Of these, 4 were aged between 1-4 years, 1 between 20-44 years, 2 between 45-64 years, and 13 were aged ≥65 years. Of these hospitalizations, 15 were due to Influenza A(H3N2) and five were due to influenza A (unsubtyped). No deaths were reported this week. Of the 11 cases with available data, none were admitted to the Intensive Care Unit (ICU).

    To date this season, 49 influenza A-associated hospitalizations have been reported from four provinces (AB, MB, ON & NL). The majority of the cases (75.5%; 37/49) were ≥ 65 years of age. Of the influenza A hospitalizations for which subtype was available (n=40), 7.5% (3/40) were due to influenza A(H1N1)pdm09 and 92.5% (37/40) were due to A(H3). Of the 29 cases with available data, there have been four hospitalizations for which admission to ICU was required (from NL and AB). To date this season, one influenza A(H3)-associated death has been reported (week 36) in a hospitalized case who was ≥ 65 years of age.

    * Note: The number of influenza-associated hospitalizations reported by the Aggregate Surveillance System may include cases reported by the IMPACT network. Influenza-associated hospitalizations are not reported to PHAC by the following Provinces and Territory: BC, NU, QC, NS, and NB. Only hospitalizations that require intensive medical care are reported by SK. ICU admissions are not reported in ON.

    .../
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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Week 44

    Fluwatch Report: October 28 to November 3, 2012 (Week 44)

    Posted 2012-11-09For 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/12-13/w44_12/pdf/fw2012-44-eng.pdf">2012-2013 FluWatch report: October 28 to November 3, 2012 (Week 44) (<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 increased slightly compared to the previous week; however overall activity still remains fairly low, with most regions of the country reporting no activity.
    • In week 44, a total of 64 laboratory detections of influenza were reported; of which 91% were for influenza A viruses [71% A(H3) and 29% A(un-subtyped)].
    • Six influenza outbreaks in long-term care facilities were reported in week 44.
    • Eleven influenza A-associated hospitalizations were reported in week 44: 8 in adults >20 years of age, and 2 in children.
    • The ILI consultation rate increased in week 44 to 21.9 per 1,000 patient visits but is within the expected level for this time of year.
    Influenza Activity (geographic spread) and Outbreaks

    In week 44, 5 regions [within AB(1), SK(1), ON(2) and QC(1)] reported localized activity, 9 regions [within BC(1), AB(2), MB(1), ON(1), QC(3) and PE(1)] reported sporadic activity and the rest reported no activity (Figures 1 and 2). Six new influenza outbreaks were reported in week 44 [in AB(2), SK(1), ON(2) and QC(1)] and all were in long-term care facilities (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 44





    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, 2012-2013 (N<SUP>*</SUP>=58)


    ?sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
    * Total number of influenza surveillance regions in Canada
    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, 2012-2013


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

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    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests increased from the previous week, from 1.3% in week 43 to 2.8% in week 44 (Figures 4 and 5). Among the influenza viruses detected this week (n=64), 90.6% were positive for influenza A viruses [of which 70.7% were A(H3) and 29.3% were A unsubtyped] and 9.4% for influenza B viruses (Table 1).
    Cumulative influenza virus detections by type/subtype to date are as follows: 91.6% influenza A [64.5% A(H3), 4.6% A(H1N1)pdm09 and 30.9% A(unsubtyped)] and 8.4% influenza B (Table 1).
    Detailed information on age and type/subtype was received for 104 cases to date this season (Table 2).The proportions of cases by age group were as follows: 8.7% were < 5 years; 8.7% were between 5-19 years; 13.5% were between 20-44 years; 15.4% were between 45-64 years of age; 53.9% were ≥ 65 years.
    The percentage positive for rhinovirus detections decreased from the previous week, from 20.6% in week 43 to 15.5% week 44; but remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 44 remained low, although RSV and parainfluenza increased slightly compared to week 43: RSV 2.4%; parainfluenza 3.3%; adenovirus 1.1%; hMPV 0.2%; and coronavirus 1.3% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (October 28 to November 3, 2012)
    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to November 3, 2012)
    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B
    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B
    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*
    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*
    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac3">1 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac5">0 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac7">1 </TD><TD class=alignCenter headers="ar1 ar2 ac1 ac8">2 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac11">7 </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">3 </TD><TD class=alignCenter headers="ar1 ar2 ac9 ac16">3 </TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac3">28 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac5">24 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac7">4 </TD><TD class=alignCenter headers="ar1 ar3 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac11">60 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac13">44 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac14">7 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac15">9 </TD><TD class=alignCenter headers="ar1 ar3 ac9 ac16">2 </TD></TR><TR><TH id=ar4 class=bg-colour-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignCenter headers="ar1 ar4 ac1 ac2 ac3">1 </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">1 </TD><TD class=alignCenter headers="ar1 ar4 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac10 ac11">3 </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">3 </TD><TD class=alignCenter headers="ar1 ar4 ac9 ac16">1 </TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac3">1 </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">1 </TD><TD class=alignCenter headers="ar1 ar5 ac1 ac8">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac11">4 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac13">3 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac15">1 </TD><TD class=alignCenter headers="ar1 ar5 ac9 ac16">0 </TD></TR><TR><TH id=ar6 class=bg-colour-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac3">17 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac5">12 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac7">5 </TD><TD class=alignCenter headers="ar1 ar6 ac1 ac8">1 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac11">59 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac13">39 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac15">20 </TD><TD class=alignCenter headers="ar1 ar6 ac9 ac16">3 </TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>

    </TH><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac3">9 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac5">4 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac7">5 </TD><TD class=alignCenter headers="ar1 ar7 ac1 ac8">3 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac11">16 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac13">5 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac14">0 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac15">11 </TD><TD class=alignCenter headers="ar1 ar7 ac9 ac16">5 </TD></TR><TR><TH id=ar8 class=bg-colour-yellow headers=ar1><ABBR title="New Brunswick">NB</ABBR>

    </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-yellow headers=ar1><ABBR title="Nova Scotia ">NS</ABBR>

    </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-yellow headers=ar1><ABBR title="Prince Edward Island ">PE</ABBR>

    </TH><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac3">1 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar10 ac1 ac2 ac5">1 </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">1 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar10 ac9 ac10 ac13">1 </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-yellow headers=ar1><ABBR title="Newfoundland/Labrador ">NL</ABBR>

    </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">2 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac13">2 </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-yellow headers=ar1>Canada</TH><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac3">58 </TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac4">0 </TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac5">41 </TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac6">0 </TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac7">17 </TD><TD class=alignCenter headers="ar1 ar12 ac1 ac8">6 </TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac11">152 </TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac12">0 </TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac13">98 </TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac14">7 </TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac15">47 </TD><TD class=alignCenter headers="ar1 ar12 ac9 ac16">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, 2012-2013 Table 2 note*
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (October 28 to November 3, 2012)
    </TH><TH id=bc8 colSpan=5>Cumulative
    (August 26, 2012 to November 3, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>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 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">7 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc11">1 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc12">6 </TD><TD class=alignCenter headers="br1 br2 bc8 bc9 bc13">0 </TD><TD class=alignCenter headers="br1 br2 bc8 bc14">2 </TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignCenter headers="br1 br3 bc1 bc2 bc3">4 </TD><TD class=alignCenter headers="br1 br3 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br3 bc1 bc2 bc5">2 </TD><TD class=alignCenter headers="br1 br3 bc1 bc2 bc6">2 </TD><TD class=alignCenter headers="br1 br3 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc10">9 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc11">0 </TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc12">6</TD><TD class=alignCenter headers="br1 br3 bc8 bc9 bc13">3 </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">2 </TD><TD class=alignCenter headers="br1 br4 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br4 bc1 bc2 bc5">2 </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">13 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc11">3 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc12">6 </TD><TD class=alignCenter headers="br1 br4 bc8 bc9 bc13">4 </TD><TD class=alignCenter headers="br1 br4 bc8 bc14">1 </TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignCenter headers="br1 br5 bc1 bc2 bc3">3 </TD><TD class=alignCenter headers="br1 br5 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br5 bc1 bc2 bc5">2 </TD><TD class=alignCenter headers="br1 br5 bc1 bc2 bc6">1 </TD><TD class=alignCenter headers="br1 br5 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc10">13 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc11">1 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc12">6 </TD><TD class=alignCenter headers="br1 br5 bc8 bc9 bc13">6 </TD><TD class=alignCenter headers="br1 br5 bc8 bc14">3 </TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignCenter headers="br1 br6 bc1 bc2 bc3">16 </TD><TD class=alignCenter headers="br1 br6 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br6 bc1 bc2 bc5">15 </TD><TD class=alignCenter headers="br1 br6 bc1 bc2 bc6">1 </TD><TD class=alignCenter headers="br1 br6 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc10">55</TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc11">2 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc12">37 </TD><TD class=alignCenter headers="br1 br6 bc8 bc9 bc13">16 </TD><TD class=alignCenter headers="br1 br6 bc8 bc14">1 </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">25 </TD><TD class=alignCenter headers="br1 br8 bc1 bc2 bc4">0 </TD><TD class=alignCenter headers="br1 br8 bc1 bc2 bc5">21 </TD><TD class=alignCenter headers="br1 br8 bc1 bc2 bc6">4 </TD><TD class=alignCenter headers="br1 br8 bc1 bc7">0 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc10">97 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc11">7 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc12">61 </TD><TD class=alignCenter headers="br1 br8 bc8 bc9 bc13">29 </TD><TD class=alignCenter headers="br1 br8 bc8 bc14">7 </TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013


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

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    Influenza strain characterizations

    Since the start of the season, the National Microbiology Laboratory (NML) has antigenically characterized 6 influenza viruses [4 A(H3N2) and 2 B]. The 4 influenza A(H3N2) viruses (from BC and ON) were antigenically similar to the vaccine strain A/Victoria/361/2011. Both of the influenza B viruses (from ON and QC) were antigenically similar to the vaccine strain B/Wisconsin/01/2010 (Yamagata lineage) (Figure 6).
    Figure 6. Influenza strain characterizations, Canada, 2012-2013, N = 6

    Note:The recommended components for the 2012-2013 Northern Hemisphere influenza vaccine include: an A/Victoria/361/2011 (H3N2)-like virus; an A/California/7/2009 (H1N1)pdm09-like virus; and a B/Wisconsin/1/2010-like virus.
    Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

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    Antiviral resistance

    Since the beginning of the season, NML has tested 6 influenza viruses [4 A(H3N2) and 2 B] for resistance to oseltamivir and zanamivir and it was found that all were sensitive to oseltamivir and zanamivir. A total of 14 influenza A(H3N2) viruses were tested for amantadine resistance and all 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, 2012-2013</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 class=fontSize85 colSpan=7><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=alignCenter headers="cr2 cc2">4</TD><TD class=alignCenter headers="cr2 cc3">0</TD><TD class=alignCenter headers="cr2 cc5">4</TD><TD class=alignCenter headers="cr2 cc6">0</TD><TD class=alignCenter headers="cr2 cc8">14</TD><TD class=alignCenter headers="cr2 cc9">14 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignCenter headers="cr3 cc2">0</TD><TD class=alignCenter headers="cr3 cc3">0</TD><TD class=alignCenter headers="cr3 cc5">0</TD><TD class=alignCenter headers="cr3 cc6">0</TD><TD class=alignCenter headers="cr3 cc8">0</TD><TD class=alignCenter headers="cr3 cc9">0</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignCenter headers="cr4 cc2">2</TD><TD class=alignCenter headers="cr4 cc3">0</TD><TD class=alignCenter headers="cr4 cc5">2</TD><TD class=alignCenter headers="cr4 cc6">0</TD><TD class=alignCenter headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignCenter headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignCenter headers="cr5 cc2">6</TD><TD class=alignCenter headers="cr5 cc3">0</TD><TD class=alignCenter headers="cr5 cc5">6</TD><TD class=alignCenter headers="cr5 cc6">0</TD><TD class=alignCenter headers="cr5 cc8">14</TD><TD class=alignCenter headers="cr5 cc9">14 (100%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national influenza-like-illness (ILI) consultation rate in week 44 increased from the previous week from 19.6 to 21.9 ILI consultations per 1,000 patient visits; but remains within the expected levels for this time of year (Figure 7). The highest consultation rates were observed in children less than 5 years of age (80.1/1,000) and children 5-19 years of age (37.4/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)



    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)
    Since the start of the 2012-13 season, one laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalization has been reported by the Immunization Monitoring Program Active (IMPACT) network. The hospitalization was reported in Saskatchewan in week 42, in a child between 10 and 16 years of age with influenza A.
    Note: The number of hospitalizations reported through IMPACT represents a subset of all influenza-associate paediatric hospitalizations in Canada.

    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)

    In week 44, 11 laboratory-confirmed influenza A-associated hospitalizations were reported [ON(5), MB(1), AB(5)]. Of these, eight were aged ≥65 years, one between 45-64 years, one between 5-9 years and one < 1 year. Among the 11 influenza A hospitalizations, nine were Influenza A/H3N2 and two were unsubtyped. None of these cases were admitted to the Intensive Care Unit (ICU), and there were no deaths.

    To date this season, 27 influenza A-associated hospitalizations have been reported from four provinces (AB, MB, ON and NL). The majority of the cases (81.5%; 22/27) were ≥ 65 years of age. Of the influenza A hospitalizations for which subtype was available, 13.0% (3/23) were due to influenza A(H1N1)pdm09 and 87.0% (20/23) were due to A(H3N2).

    There have been three hospitalizations for which admission to ICU was required (from NL and AB). To date this season, no influenza-associated deaths have been reported.

    Note: Influenza-associated hospitalizations are not reported to PHAC by the following Provinces and Territory: BC, NU, QC, NS, and 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/.../index-eng.php

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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Week 43

    Fluwatch Report: October 21 to October 27, 2012 (Week 43)

    Posted 2012-11-02For 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/12-13/w43_12/pdf/fw2012-43-eng.pdf">2012-2013 FluWatch report: October 21 to October 27, 2012 (Week 43) (<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 and was similar to the previous week
    • In week 43, a total of 25 laboratory detections of influenza were reported, 88% of which were for influenza A viruses (68.2% A(H3) and 31.8% A(un-subtyped)).
    • Two influenza outbreaks in long-term care facilities were reported in week 43
    • Five influenza A-associated hospitalizations (in persons ≥65 years of age) were reported in week 43
    • The ILI consultation rate increased in week 43 to 20.0 per 1,000 patient visits but is within the expected level for this time of year
    Influenza Activity (geographic spread) and Outbreaks

    In week 43, 4 regions (within AB(1) & ON(3)) reported localized activity, 5 regions (within BC, AB(2), ON & QC) reported sporadic activity and the rest reported no activity (see Figure 1). Two new influenza outbreaks were reported in week 43 (in AB & ON) and both were in long-term care facilities (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 43





    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, 2012-2013 (N<SUP>*</SUP>=58)


    ?sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
    * Total number of influenza surveillance regions in Canada
    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, 2012-2013


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

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    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests increased slightly from the previous week from 0.9% in week 42 to 1.3% in week 43 (Figure 4 and link to figure 55). Among the influenza viruses detected this week (n=25), 88% were positive for influenza A viruses (of which 68.2% were A(H3) and 31.8% were A unsubtyped) and 12% for influenza B viruses (Table 1).
    Cumulative influenza virus detections by type/subtype to date are as follows: 92.1% influenza A (58.1% - A(H3), 7.5% - A(H1N1)pdm09 and 34.4% - unsubtyped) and 7.9% influenza B (Table 1).
    Detailed information on age and type/subtype were received on 79 cases to date this season (Table 2). The proportions of cases by age group were as follows: 11.4% were < 5 years; 6.3% were between 5-19 years; 15.2% were between 20-44 years; 16.5% were between 45-64 years of age; 50.6% were ≥ 65 years.
    The percentage positive for rhinovirus detections decreased from the previous week, from 24.9% in week 42 to 19.4% week 43, and remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 43 remained low: RSV 2.0%; parainfluenza 3.0%; adenovirus 2.0%; hMPV 0.6%; and coronavirus 0.7% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (October 21 to October 27, 2012)
    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to October 27, 2012)
    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B
    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B
    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*
    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*
    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></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">1</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">4</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">2</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">1</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">7</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">6</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">32</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">19</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">7</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">6</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">2</TD></TR><TR><TH id=ar4 class=bg-colour-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></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">2</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">2</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">3</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-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">14</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">9</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">5</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">42</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">27</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">15</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">2</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>

    </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">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac15">6</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">2</TD></TR><TR><TH id=ar8 class=bg-colour-yellow 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">0</TD></TR><TR><TH id=ar9 class=bg-colour-yellow 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-yellow 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-yellow 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">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">2</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">1</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-yellow headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">22</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">15</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">7</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">3</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">93</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">54</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">7</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">32</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">8</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, 2012-2013 Table 2 note*
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (October 21 to October 27, 2012)
    </TH><TH id=bc8 colSpan=5>Cumulative
    (August 26, 2012 to October 27, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>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 id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">1</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">1</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">0</TD><TD class=alignRight headers="br1 br2 bc1 bc7">1</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">7</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">6</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br2 bc8 bc14">2</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">1</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">1</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">5</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">4</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">1</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">1</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">11</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">3</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">4</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">4</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">3</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">1</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">2</TD><TD class=alignRight headers="br1 br5 bc1 bc7">0</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">10</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">4</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">5</TD><TD class=alignRight headers="br1 br5 bc8 bc14">3</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">10</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">4</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">6</TD><TD class=alignRight headers="br1 br6 bc1 bc7">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">39</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">2</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">22</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">15</TD><TD class=alignRight headers="br1 br6 bc8 bc14">1</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">15</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">7</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">8</TD><TD class=alignRight headers="br1 br8 bc1 bc7">2</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">72</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">7</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">40</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">25</TD><TD class=alignRight headers="br1 br8 bc8 bc14">7</TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013


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

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    Influenza strain characterizations

    Since the start of the season, the National Microbiology Laboratory (NML) has antigenically characterized 3 influenza viruses [1 A(H3N2) and 2 B]. The influenza A(H3N2) virus (from BC) was antigenically similar to the vaccine strain A/Victoria/361/2011. Both of the influenza B viruses (from ON & QC) were antigenically similar to the vaccine strain B/Wisconsin/01/2010 (Yamagata lineage) (Figure 6).
    Figure 6. Influenza strain characterizations, Canada, 2012-2013, N = 3

    Note:The recommended components for the 2012-2013 Northern Hemisphere influenza vaccine include: an A/Victoria/361/2011 (H3N2)-like virus; an A/California/7/2009 (H1N1)pdm09-like virus; and a B/Wisconsin/1/2010-like virus.
    Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

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    Antiviral resistance

    Since the beginning of the season, NML has tested 3 influenza viruses [1 A(H3N2) and 2 B] for resistance to oseltamivir and zanamivir and it was found that all were sensitive to oseltamivir and zanamivir. A total of 6 influenza A(H3N2) viruses were tested for amantadine resistance and all 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, 2012-2013</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 class=fontSize85 colSpan=7><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="cr2 cc2">1</TD><TD class=alignRight headers="cr2 cc3">0</TD><TD class=alignRight headers="cr2 cc5">1</TD><TD class=alignRight headers="cr2 cc6">0</TD><TD class=alignRight headers="cr2 cc8">6</TD><TD class=alignRight headers="cr2 cc9">6 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr3 cc2">0</TD><TD class=alignRight headers="cr3 cc3">0</TD><TD class=alignRight headers="cr3 cc5">0</TD><TD class=alignRight headers="cr3 cc6">0</TD><TD class=alignRight headers="cr3 cc8">0</TD><TD class=alignRight headers="cr3 cc9">0</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr4 cc2">2</TD><TD class=alignRight headers="cr4 cc3">0</TD><TD class=alignRight headers="cr4 cc5">2</TD><TD class=alignRight headers="cr4 cc6">0</TD><TD class=alignRight headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignRight headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr5 cc2">3</TD><TD class=alignRight headers="cr5 cc3">0</TD><TD class=alignRight headers="cr5 cc5">3</TD><TD class=alignRight headers="cr5 cc6">0</TD><TD class=alignRight headers="cr5 cc8">6</TD><TD class=alignRight headers="cr5 cc9">6 (100%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national influenza-like-illness (ILI) consultation rate in week 43 increased from the previous week from 17.8 to 20.0 ILI consultations per 1,000 patient visits and is within the expected levels for this time of year (Figure 7). The highest consultation rates were observed in those less than 5 years of age (34.8/1,000) and those ≥65 years of age (23.6/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)



    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)
    No laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations have been reported by the Immunization Monitoring Program Active (IMPACT) network since the start of the 2012-2013 influenza season.

    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)
    In week 43, five laboratory-confirmed influenza A-associated hospitalizations were reported [from ON(4) & AB(1)]. The cases were all ≥65 years of age.

    To date this season, 11 influenza A-associated hospitalizations have been reported from 3 provinces (AB, ON & NL); all were ≥ 65 years of age. Of the influenza A hospitalizations where subtype was available, 22.2% (2) were due to influenza A(H1N1)pdm09 and 77.8% (7) were due to A(H3N2).

    There has been one hospitalisation for which admission to ICU was required (from NL). To date this season, no influenza-associated deaths have been reported.

    Note: Influenza-associated hospitalizations are not reported to PHAC by the following Provinces and Territory: BC, NU, QC, NS, & 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/.../index-eng.php

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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Week 42

    Fluwatch Report: October 14 to October 20, 2012 (Week 42)

    Posted 2012-10-26For 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/12-13/w42_12/pdf/fw2012-42-eng.pdf">2012-2013 FluWatch report: October 14 to October 20, 2012 (Week 42) (<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 and was similar to the previous week
    • In week 42, a total of 17 laboratory detections of influenza were reported, all of which were for influenza A viruses [8 A(H3), 1 A(H1N1)pdm09, 8 A(un-subtyped)]
    • Two influenza outbreaks in long-term care facilities were reported in week 42
    • One influenza A-associated hospitalization (in a person ≥65 years of age) was reported in week 42
    • The ILI consultation rate increased in week 42 to 18.0 per 1,000 patient visits but is within the expected level for this time of year

    Influenza Activity (geographic spread) and Outbreaks

    In week 42, 4 regions (within AB & ON) reported localized activity, 4 regions (within AB, ON, QC & NL) reported sporadic activity and the rest reported no activity (see Figure 1). Note that data was not received from SK for week 42. Two new influenza outbreaks were reported in week 42 and both were in long-term care facilities (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 42






    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, 2012-2013 (N<SUP>*</SUP>=58)


    ?sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
    * Total number of influenza surveillance regions in Canada
    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, 2012-2013


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

    Top of Page

    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests declined slightly from the previous week from 1.2% in week 41 to 0.9% in week 42 (Figure 4 and link to figure 55). All of the influenza viruses detected this week (n=17) were positive for influenza A viruses (of which 47.1% were A(H3), 5.9% were A(H1N1)pdm09 and 47.1% were A unsubtyped) (Table 1).
    Cumulative influenza virus detections by type/subtype to date are as follows: 93.3% influenza A (54.3% - A(H3), 10.0% - A(H1N1)pdm09 and 35.7% - unsubtyped) and 6.7% influenza B (Table 1).
    Detailed information on age and type/subtype were received on 58 cases to date this season (Table 2). The proportions of cases by age group were as follows: 12.1% were < 5 years; 6.9% were between 5-19 years; 19.0% were between 20-44 years; 13.8% were between 45-64 years of age; 48.3% were ≥ 65 years.
    The percentage positive for rhinovirus detections increased slightly from the previous week (23.4% in week 42) and remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 42 remained low: RSV-1.9%; parainfluenza-2.9%; adenovirus-1.0%; hMPV-0.2%; and coronavirus-1.2% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (October 14 to October 20, 2012)</TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to October 20, 2012)</TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B</TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B</TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*</TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*</TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></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">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">4</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">2</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">0</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">6</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">3</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">1</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">2</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">25</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">12</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">7</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">6</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1</TD></TR><TR><TH id=ar4 class=bg-colour-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">1</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">1</TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">2</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">2</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">3</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-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">7</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">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">3</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">28</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">18</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">10</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">1</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>
    </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">2</TD></TR><TR><TH id=ar8 class=bg-colour-yellow 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">0</TD></TR><TR><TH id=ar9 class=bg-colour-yellow 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-yellow 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-yellow 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">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar11 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar11 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">2</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">1</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-yellow headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">17</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">8</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">8</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">70</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">38</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">7</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">25</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">5</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, 2012-2013
    Table 2 note*</CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (October 14 to October 20, 2012)</TH><TH id=bc8 colSpan=5>Cumulative
    (August 26, 2012 to October 20, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>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 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">6</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">5</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">0</TD><TD class=alignRight headers="br1 br2 bc8 bc14">1</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">4</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">2</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">2</TD><TD class=alignRight headers="br1 br3 bc1 bc7">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">4</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">0</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">2</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">2</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">1</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">11</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">3</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">4</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">4</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">1</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">1</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">6</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">1</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">2</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">3</TD><TD class=alignRight headers="br1 br5 bc8 bc14">2</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">5</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">0</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">1</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">4</TD><TD class=alignRight headers="br1 br6 bc1 bc7">0</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">27</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">2</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">17</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">8</TD><TD class=alignRight headers="br1 br6 bc8 bc14">1</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">11</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">1</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">4</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">6</TD><TD class=alignRight headers="br1 br8 bc1 bc7">0</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">54</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">7</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">30</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">17</TD><TD class=alignRight headers="br1 br8 bc8 bc14">4</TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013



    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, 2012-2013



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

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    Influenza strain characterizations

    Since the start of the season, the National Microbiology Laboratory (NML) has antigenically characterized 3 influenza viruses [1 A(H3N2) and 2 B]. The influenza A(H3N2) virus (from BC) was antigenically similar to the vaccine strain A/Victoria/361/2011. Both of the influenza B viruses (from ON & QC) were antigenically similar to the vaccine strain B/Wisconsin/01/2010 (Yamagata lineage) (Figure 6).
    Figure 6. Influenza strain characterizations, Canada, 2012-2013, N = 3

    Note:The recommended components for the 2012-2013 Northern Hemisphere influenza vaccine include: an A/Victoria/361/2011 (H3N2)-like virus; an A/California/7/2009 (H1N1)pdm09-like virus; and a B/Wisconsin/1/2010-like virus.
    Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

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    Antiviral resistance

    Since the beginning of the season, NML has tested 3 influenza viruses [1 A(H3N2) and 2 B] for resistance to oseltamivir and zanamivir and it was found that all were sensitive to oseltamivir and zanamivir. A total of 6 influenza A(H3N2) viruses were tested for amantadine resistance and all 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, 2012-2013</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 class=fontSize85 colSpan=7><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="cr2 cc2">1</TD><TD class=alignRight headers="cr2 cc3">0</TD><TD class=alignRight headers="cr2 cc5">1</TD><TD class=alignRight headers="cr2 cc6">0</TD><TD class=alignRight headers="cr2 cc8">6</TD><TD class=alignRight headers="cr2 cc9">6 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr3 cc2">0</TD><TD class=alignRight headers="cr3 cc3">0</TD><TD class=alignRight headers="cr3 cc5">0</TD><TD class=alignRight headers="cr3 cc6">0</TD><TD class=alignRight headers="cr3 cc8">0</TD><TD class=alignRight headers="cr3 cc9">0</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr4 cc2">2</TD><TD class=alignRight headers="cr4 cc3">0</TD><TD class=alignRight headers="cr4 cc5">2</TD><TD class=alignRight headers="cr4 cc6">0</TD><TD class=alignRight headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignRight headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr5 cc2">3</TD><TD class=alignRight headers="cr5 cc3">0</TD><TD class=alignRight headers="cr5 cc5">3</TD><TD class=alignRight headers="cr5 cc6">0</TD><TD class=alignRight headers="cr5 cc8">6</TD><TD class=alignRight headers="cr5 cc9">6 (100%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national influenza-like-illness (ILI) consultation rate in week 42 increased from the previous week to 18.0 ILI consultations per 1,000 patient visits and is within the expected levels for this time of year (Figure 7). The highest consultation rates were observed in those less than 5 years of age (30.5/1,000) and those ≥65 years of age (20.2/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)



    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)

    No laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations have been reported by the Immunization Monitoring Program Active (IMPACT) network since the start of the 2012-2013 influenza season.

    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)

    In week 42, one laboratory-confirmed influenza A-associated hospitalization was reported (from NL). The case was ≥65 years of age.

    To date this season, 6 influenza A-associated hospitalizations have been reported from 3 provinces (AB, ON & NL); all were ≥ 65 years of age. Of the influenza A hospitalizations where subtype was available (4), 50% were due to influenza A(H1N1)pdm09 and 50% were due to A(H3N2). There has been one hospitalisation for which admission to ICU was required (from NL). To date this season, no influenza-associated deaths have been reported.

    Note: Influenza-associated hospitalizations are not reported to PHAC by the following Provinces and Territory: BC, NU, QC, NS, & 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/.../index-eng.php

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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Week 41

    Fluwatch Report: October 7 to October 13, 2012 (Week 41)

    Posted 2012-10-19For 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/12-13/w41_12/pdf/fw2012-41-eng.pdf">2012-2013 FluWatch report: October 7 to October 13, 2012 (Week 41) (<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 but has increased slightly from last week as more regions have reported localized and sporadic influenza activity
    • In week 41, a total of 17 laboratory detections of influenza were reported, the majority (94%) of which were for influenza A viruses [8 A(H3), 1 A(H1N1)pdm09, 7 A(un-subtyped) and 1 B]
    • Four new influenza outbreaks were reported in week 41: 3 in LTCFs and 1 other
    • One influenza A-associated hospitalization (in a person ≥65 years of age) was reported in week 41
    • The ILI consultation rate declined in week 41 to 10.2 per 1,000 patient visits is below the expected level for this time of year
    Influenza Activity (geographic spread) and Outbreaks

    In week 41, 3 regions (within AB & ON) reported localized activity, 6 regions (within BC, AB, ON & QC) reported sporadic activity and the rest reported no activity (see Figure 1). Note that data was not received from SK for week 41. Four new influenza outbreaks were reported in week 41: 3 in long-term care facilities (LCTF) and 1 other type of facility (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 41





    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, 2012-2013 (N<SUP>*</SUP>=58)


    ? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
    * Total number of influenza surveillance regions in Canada
    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, 2012-2013


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

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    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests increased slightly from the previous week from 0.4% in week 40 to 0.9% in week 41 (Figure 4 and link to figure 55). Of the influenza viruses detected this week (n=17), 94% were positive for influenza A viruses (of which 50% were A(H3), 6.2% were A(H1N1)pdm09 and 43.8% were A unsubtyped) and 6% were influenza B viruses (Table 1).

    Cumulative influenza virus detections by type/subtype to date are as follows: 90.7% influenza A (51.0% - A(H3), 12.2% - A(H1N1)pdm09 and 36.7% - unsubtyped) and 9.3% influenza B (Table 1).

    To date this season, individuals aged 65 years and older make up the largest proportion of all influenza cases. Additional information on age and type/subtype of the positive influenza cases will be presented in Table 2 once more information becomes available.

    The percentage positive for rhinovirus detections declined from the previous week (20.6% in week 41) but remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 41 remained low: RSV-2.0%; parainfluenza-2.4%; adenovirus-1.2%; hMPV-0.2%; and coronavirus-0.7% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (October 7 to October 13, 2012)
    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to October 13, 2012)
    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B
    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B
    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*
    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*
    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></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">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar2 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar2 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">5</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">3</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">2</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">0</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac3">6</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac5">2</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">1</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac7">3</TD><TD class=alignRight headers="ar1 ar3 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac11">14</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">4</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">6</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac15">4</TD><TD class=alignRight headers="ar1 ar3 ac9 ac16">1</TD></TR><TR><TH id=ar4 class=bg-colour-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></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">1</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">1</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">3</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-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">7</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">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">1</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">21</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">14</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">7</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">1</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>

    </TH><TD class=alignRight headers="ar1 ar7 ac1 ac2 ac3">2</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">2</TD><TD class=alignRight headers="ar1 ar7 ac1 ac8">1</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">2</TD></TR><TR><TH id=ar8 class=bg-colour-yellow 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">0</TD></TR><TR><TH id=ar9 class=bg-colour-yellow 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-yellow 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-yellow 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">0</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">0</TD></TR><TR><TH id=ar12 class=bg-colour-yellow headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">16</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">8</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">1</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">7</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">49</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">25</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">6</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">18</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">5</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, 2012-2013 Table 2 note*
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (October 7 to October 13, 2012)
    </TH><TH id=bc8 colSpan=5>Cumulative
    (Aug. 26, 2012 to October 13, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that the table will be populated once more data becomes available.</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br2 bc1 bc7">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br2 bc8 bc14">-</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br3 bc1 bc7">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br3 bc8 bc14">-</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br4 bc1 bc7">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br4 bc8 bc14">-</TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br5 bc1 bc7">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br5 bc8 bc14">-</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br6 bc1 bc7">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br6 bc8 bc14">-</TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br7 bc1 bc7">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br7 bc8 bc14">-</TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br8 bc1 bc7">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br8 bc8 bc14">-</TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013


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

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    Influenza strain characterizations

    Since the start of the 2012-2013 influenza season, the National Microbiology Laboratory (NML) has antigenically characterized 1 influenza B virus; the virus was antigenically similar to the vaccine strain B/Wisconsin/01/2010 (Yamagata lineage) (Figure 6).
    Figure 6. Influenza strain characterizations, Canada, 2012-2013, N = 1

    Note:The recommended components for the 2012-2013 Northern Hemisphere influenza vaccine include: an A/Victoria/361/2011 (H3N2)-like virus; an A/California/7/2009 (H1N1)pdm09-like virus; and a B/Wisconsin/1/2010-like virus.
    Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

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    Antiviral resistance

    Since the beginning of the season, NML has tested 1 influenza B virus for resistance to oseltamivir and 1 for zanamivir and it was found that the virus tested was sensitive to oseltamivir and zanamivir. A total of 3 influenza A(H3N2) viruses were tested for amantadine resistance and all 3 viruses 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, 2012-2013</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 class=fontSize85 colSpan=7><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="cr2 cc2">0</TD><TD class=alignRight headers="cr2 cc3">0</TD><TD class=alignRight headers="cr2 cc5">0</TD><TD class=alignRight headers="cr2 cc6">0</TD><TD class=alignRight headers="cr2 cc8">3</TD><TD class=alignRight headers="cr2 cc9">3 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr3 cc2">0</TD><TD class=alignRight headers="cr3 cc3">0</TD><TD class=alignRight headers="cr3 cc5">0</TD><TD class=alignRight headers="cr3 cc6">0</TD><TD class=alignRight headers="cr3 cc8">0</TD><TD class=alignRight headers="cr3 cc9">0</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr4 cc2">1</TD><TD class=alignRight headers="cr4 cc3">0</TD><TD class=alignRight headers="cr4 cc5">1</TD><TD class=alignRight headers="cr4 cc6">0</TD><TD class=alignRight headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignRight headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr5 cc2">1</TD><TD class=alignRight headers="cr5 cc3">0</TD><TD class=alignRight headers="cr5 cc5">1</TD><TD class=alignRight headers="cr5 cc6">0</TD><TD class=alignRight headers="cr5 cc8">3</TD><TD class=alignRight headers="cr5 cc9">3 (100%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national influenza-like-illness (ILI) consultation rate in week 41 declined slightly from the previous week to 10.2 ILI consultations per 1,000 patient visits. However this rate is below the expected levels for this time of year (Figure 7). The highest consultation rates were observed in those between 5 and 19 years of age (16.6/1,000) and those less than 5 years of age (14.2/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)



    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)

    No laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations have been reported by the Immunization Monitoring Program Active (IMPACT) network since the start of the 2012-2013 influenza season.

    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)

    In week 41, one laboratory-confirmed influenza A-associated hospitalization was reported (from ON). The case was ≥65 years of age.
    To date this season, 5 influenza A-associated hospitalizations have been reported from 3 provinces (AB, ON & NL); all were ≥ 65 years of age. Of the influenza A hospitalizations where subtype was available (4), 50% were due to influenza A(H1N1)pdm09 and 50% were due to A(H3N2). There has been one hospitalisation for which admission to ICU was required (from NL). To date this season, no influenza-associated deaths have been reported.
    Note: Influenza-associated hospitalizations are not reported to PHAC by the following Provinces: BC, NU, QC, NS, & 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/.../index-eng.php

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  • Pathfinder
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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Weeks 39-40

    Fluwatch Report: September 23 to October 6, 2012 (Weeks 39 & 40)

    Posted 2012-10-12For 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/12-13/w40_12/pdf/fw2012-40-eng.pdf">2012-2013 FluWatch report: September 23 to October 6, 2012 (Weeks 39 & 40) (<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 but has increased slightly since the last report as two regions (in AB & ON) reported localized influenza activity
    • In weeks 39 and 40, a total of 11 laboratory detections of influenza were reported, the majority (92%) of which were for influenza A viruses [5 A(H3), 4 A(H1N1)pdm09, 2 A(un-subtyped) and 1 B]
    • Two new influenza outbreaks were reported in week 40: 1 in a LTCF and 1 other
    • Three influenza A-associated hospitalizations (in persons ≥65 years of age) were reported over the two-week period
    • The ILI consultation rate increased slightly in week 40 to 18.6 per 1,000 patient visits but remains within the expected level for this time of year
    <HR>NOTE: Weekly FluWatchreporting will start on October 19, 2012 and will continue until May 2013.

    Influenza Activity (geographic spread) and Outbreaks

    In week 39, 2 regions (within BC & ON) reported sporadic activity while the rest reported no activity. In week 40, 2 regions (within AB & ON) reported localized activity, 1 region (within ON) reported sporadic activity and the rest reported no activity (see Figure 1). Note that data was not received from AB & SK for week 39 and from SK & PEI for week 40. Two new influenza outbreaks were reported in week 40: 1 in a long-term care facility (LCTF) and 1 other type of facility (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 40





    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, 2012-2013 (N<SUP>*</SUP>=58)


    ? sub-regions within the province or territory as defined by the provincial/territorial epidemiologist. Graph may change as late returns come in.
    * Total number of influenza surveillance regions in Canada
    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, 2012-2013


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

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    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests was 0.3% in week 39 and 0.4% in week 40 (Figure 4 and link to figure 55). and is similar to the percentage observed in week 38 (0.3%). Of the influenza viruses detected over the two week period (n=12), 92% were positive for influenza A viruses (of which 45% were A(H3), 36% were A(H1N1)pdm09 and 18% were A unsubtyped) and 8% were influenza B viruses (Table 1).
    Cumulative influenza virus detections by type/subtype to date are as follows: 89.5% influenza A (47.1% - A(H3), 14.7% - A(H1N1)pdm09 and 38.2% - unsubtyped) and 10.5% influenza B (Table 1).
    Detailed information on age and type/subtype of the positive influenza cases to date will be presented once more information becomes available (Table 2).
    The percentage positive for rhinovirus detections increased over the two week period (31.5% & 32.8% in weeks 39 & 40 respectively) and remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 40 remained low: RSV-1.8%; parainfluenza-3.1%; adenovirus-1.1%; hMPV-0.3%; and coronavirus-0.3% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (September 23 to October 6, 2012)
    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to October 6, 2012)
    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B
    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B
    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*
    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*
    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></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">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac11">4</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">3</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">1</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">0</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></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">1</TD><TD class=alignRight headers="ar1 ar3 ac1 ac2 ac6">4</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">8</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">2</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac14">5</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-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></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">1</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">1</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">3</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-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">5</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac5">3</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac6">0</TD><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac7">2</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">14</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">7</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">7</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">1</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>

    </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">0</TD><TD class=alignRight headers="ar1 ar7 ac9 ac10 ac11">2</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">2</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">1</TD></TR><TR><TH id=ar8 class=bg-colour-yellow 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">0</TD></TR><TR><TH id=ar9 class=bg-colour-yellow 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-yellow 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-yellow 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">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">2</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">1</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-yellow headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">11</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac5">5</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac6">4</TD><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac7">2</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">34</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac13">16</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac14">5</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">13</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">4</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, 2012-2013 Table 2 note*
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (September 23 to October 6, 2012)
    </TH><TH id=bc8 colSpan=5>Cumulative
    (Aug. 26, 2012 to October 6, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that the table will be populated once more data becomes available.</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br2 bc1 bc7">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br2 bc8 bc14">-</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br3 bc1 bc7">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br3 bc8 bc14">-</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br4 bc1 bc7">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br4 bc8 bc14">-</TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br5 bc1 bc7">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br5 bc8 bc14">-</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br6 bc1 bc7">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br6 bc8 bc14">-</TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br7 bc1 bc7">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br7 bc8 bc14">-</TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br8 bc1 bc7">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br8 bc8 bc14">-</TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013


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

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    Influenza strain characterizations

    Since the start of the 2012-2013 influenza season, the National Microbiology Laboratory (NML) has antigenically characterized 1 influenza B virus; the virus was antigenically similar to the vaccine strain B/Wisconsin/01/2010 (Yamagata lineage)(Figure 6).
    Figure 6. Influenza strain characterizations, Canada, 2012-2013, N = 1

    Note:The recommended components for the 2012-2013 Northern Hemisphere influenza vaccine include: an A/Victoria/361/2011 (H3N2)-like virus; an A/California/7/2009 (H1N1)pdm09-like virus; and a B/Wisconsin/1/2010-like virus.
    Text equivalent for figure 6Influenza strain characterizations, Canada, 2011-2012

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    Antiviral resistance

    Since the beginning of the season, NML has tested 1 influenza virus for resistance to oseltamivir and 1 for zanamivir and it was found that the virus tested was sensitive to oseltamivir and zanamivir. A total of 3 influenza A(H3N2) viruses were tested for amantadine resistance and all 3 viruses 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, 2012-2013</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 class=fontSize85 colSpan=7><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="cr2 cc2">0</TD><TD class=alignRight headers="cr2 cc3">0</TD><TD class=alignRight headers="cr2 cc5">0</TD><TD class=alignRight headers="cr2 cc6">0</TD><TD class=alignRight headers="cr2 cc8">3</TD><TD class=alignRight headers="cr2 cc9">3 (100%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr3 cc2">0</TD><TD class=alignRight headers="cr3 cc3">0</TD><TD class=alignRight headers="cr3 cc5">0</TD><TD class=alignRight headers="cr3 cc6">0</TD><TD class=alignRight headers="cr3 cc8">0</TD><TD class=alignRight headers="cr3 cc9">0</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr4 cc2">1</TD><TD class=alignRight headers="cr4 cc3">0</TD><TD class=alignRight headers="cr4 cc5">1</TD><TD class=alignRight headers="cr4 cc6">0</TD><TD class=alignRight headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignRight headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr5 cc2">1</TD><TD class=alignRight headers="cr5 cc3">0</TD><TD class=alignRight headers="cr5 cc5">1</TD><TD class=alignRight headers="cr5 cc6">0</TD><TD class=alignRight headers="cr5 cc8">3</TD><TD class=alignRight headers="cr5 cc9">3 (100%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national influenza-like-illness (ILI) consultation rate for week 39 was 11.8 ILI consultations per 1,000 patient visits and in week 40 was 18.6/1,000; both were within expected levels for this time of year (Figure 7). The highest consultation rates in week 40 were observed in those <5 years of age (49.3/1,000) and those ≥65 years of age (35.5/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)



    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)
    No laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations have been reported by the Immunization Monitoring Program Active (IMPACT) network since the start of the 2012-2013 influenza season.

    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)

    In weeks 39 and 40, 3 laboratory-confirmed influenza A-associated hospitalizations were reported (from AB & ON). All cases were ≥65 years of age.

    To date this season, 4 influenza A-associated hospitalizations have been reported from 3 provinces (AB, ON & NL); all were ≥ 65 years of age. Of the influenza A hospitalizations where subtype was available (2), all were due to influenza A(H1N1)pdm09. There has been 1 hospitalisation for which admission to ICU was required (from NL). To date this season, no influenza-associated deaths have been reported.

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

    Top of Page


    International Influenza Update

    WHO: Influenza transmission in all reporting countries in the temperate regions of the northern hemisphere is still minimal and is at inter-seasonal levels. In the tropical areas most countries are reporting low or decreasing trends of influenza virus detections. The exceptions are Costa Rica in the Americas and India; Nepal, Lao PDR and Thailand in Asia. In Sub-Saharan Africa, Cameroon has reported an increase in influenza virus detections. It appears that the influenza season in the temperate countries of the southern hemisphere has come to an end.
    World Health Organization influenza update


    United States: The proportion of tests positive for influenza viruses increased slightly in week 39 (3.6%) compared to previous weeks (3.1% in week 38 and 2.7% in week 37). Of the positive influenza detections reported during week 39, 55% were positive for influenza B viruses. Of the 20 influenza A viruses for which subtype information was available, 85% were A(H3) and 15% were A(H1N1)pdm09. All other indicators of influenza activity remained low.
    Centers for Disease Control and Prevention seasonal influenza report

    Europe: In week 40, influenza activity in the European Region remained low. None of the 282 samples collected from sentinel sources were positive for influenza virus; 15 samples from non-sentinel sources were positive for influenza viruses (4 influenza A(H1N1)pdm09, 1 influenza A(H3N2), 6 un-subtyped and 4 influenza B). ILI and ARI consultation rates are at low levels, which is usual for this time of year.
    EuroFlu weekly electronic bulletin
    Human Avian and Swine Influenza Updates

    H5N1
    No cases of human avian influenza A/H5N1 infection have been reported by the WHO since August 10, 2012. A summary of the latest WHO Human-Animal Interface Risk Assessment (as of October 1, 2012) is available on the WHO webpage.
    WHO Avian influenza situation updates

    H1N1 variant (H1N1v)
    In week 38, a case of human infection with influenza A(H1N1) variant (H1N1v) virus was reported in Ontario, Canada. The case was an adult male with underlying risk factors who developed symptoms at the end of August and was hospitalized with pneumonia in September. He had occupational exposure to swine. No additional cases have been reported. This is the first time that an H1N1v virus has been detected in Canada with the matrix (M) gene from the influenza A(H1N1)pdm09 virus. Based on its similarity to the H1N1 virus that has circulated in humans since 2009, it is expected that the 2012-2013 seasonal influenza vaccine is likely to protect against the H1N1v influenza virus, although the seasonal influenza vaccine may not protect people against some other variant influenza viruses that are very different from currently circulating human influenza viruses.

    .../
    http://www.phac-aspc.gc.ca/fluwatch/.../index-eng.php

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    Re: Canada FluWatch Weekly Reports 2012-2013 Season Weeks 37-38

    Fluwatch Report: September 9 to September 22, 2012 (Weeks 37 & 38)

    Posted 2012-09-28For 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/12-13/w38_12/pdf/fw2012-38-eng.pdf">2012-2013 FluWatch report: September 9 to September 22, 2012 (Weeks 37 & 38) (<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 as only a few regions reported sporadic activity over the two-week period (in ON, QC & NL)
    • In weeks 37 and 38, a total of 5 laboratory detections of influenza were reported, all of which were for influenza A viruses [1 A(H1N1)pdm09 and 4 A(un-subtyped)]
    • One influenza A-associated hospitalization (in a person >20 years of age) was reported over the two-week period
    • The ILI consultation rate increased in week 38 to 17.8 per 1,000 patient visits but remains within the expected level for this time of year
    <HR>NOTE: Bi-weekly reports will continue until October 12, 2012. However, laboratory detections reported through the RVDSS and influenza activity level maps will be updated weekly on the FluWatch website.

    Influenza Activity (geographic spread) and Outbreaks

    In week 37, 1 region (within NL) reported sporadic activity while the rest reported no activity. In week 38, 3 regions (within ON & QC) reported sporadic activity and the rest reported no activity (see Figure 1). Note that data was not received from SK and PEI for week 37 and from SK for week 38. No new outbreaks of influenza or ILI were reported in weeks 37 and 38 (Figure 3).
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 38





    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, 2012-2013 (N=58)


    ? 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, 2012-2013


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

    Top of Page

    Influenza and Other Respiratory Virus Detections

    The percentage of positive influenza tests was 0.3% in week 37 and 0.4% in week 38 (Figure 4 and 5). This is a slight decrease from week 36 (0.6%). Over the two week period, only influenza A detections were reported: 20% were A(H1N1)pdm09 and 80% were A unsubtyped (Table 1).
    Cumulative influenza virus detections by type/subtype to date are as follows: 88.5% influenza A (47.8% - A(H3), 0.4% - A(H1N1)pdm09 and 47.8% - unsubtyped) and 11.5% influenza B (Table 1).
    Detailed information on age and type/subtype of the positive influenza cases to date will be presented once more information becomes available (Table 2).
    The percentage positive for rhinovirus detections was similar to the previous week (26.7% & 23.7% in weeks 37 & 38 respectively) and remains the highest compared to the other respiratory viruses. The percentage positive for the other respiratory viruses in week 38 remained low: RSV-1.1%; parainfluenza-2.0; adenovirus-1.5%; hMPV-0.0%; and coronavirus-0.7% (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, 2012-2013




    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (September 9 to September 22, 2012)




    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 26, 2012 to September 22, 2012)




    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B




    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B




    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*




    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*




    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac13">2</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar2 ac9 ac10 ac15">1</TD><TD class=alignRight headers="ar1 ar2 ac9 ac16">0</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar3 ac9 ac10 ac13">1</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-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></TH><TD class=alignRight headers="ar1 ar4 ac1 ac2 ac3">1</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">1</TD><TD class=alignRight headers="ar1 ar4 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar4 ac9 ac10 ac11">1</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">1</TD><TD class=alignRight headers="ar1 ar4 ac9 ac16">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></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">3</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar5 ac9 ac10 ac13">3</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-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignRight headers="ar1 ar6 ac1 ac2 ac3">2</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">2</TD><TD class=alignRight headers="ar1 ar6 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac11">9</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac13">4</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignRight headers="ar1 ar6 ac9 ac10 ac15">5</TD><TD class=alignRight headers="ar1 ar6 ac9 ac16">0</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>





    </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">2</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">2</TD><TD class=alignRight headers="ar1 ar7 ac9 ac16">1</TD></TR><TR><TH id=ar8 class=bg-colour-yellow 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">0</TD></TR><TR><TH id=ar9 class=bg-colour-yellow 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-yellow 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-yellow 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">0</TD><TD class=alignRight headers="ar1 ar11 ac9 ac10 ac11">2</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">1</TD><TD class=alignRight headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-yellow headers=ar1>Canada</TH><TD class=alignRight headers="ar1 ar12 ac1 ac2 ac3">5</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">4</TD><TD class=alignRight headers="ar1 ar12 ac1 ac8">0</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac11">23</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">1</TD><TD class=alignRight headers="ar1 ar12 ac9 ac10 ac15">11</TD><TD class=alignRight headers="ar1 ar12 ac9 ac16">3</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, 2012-2013 Table 2 note*




    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (September 9 to September 22, 2012)




    </TH><TH id=bc8 colSpan=5>Cumulative
    (Aug. 26, 2012 to September 22, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>Total</TH></TR></THEAD><TFOOT><TR><TD class=fontSize85 colSpan=11>* Please note that the table will be populated once more data becomes available.</TD></TR></TFOOT><TBODY><TR><TH id=br2 headers=br1>< 5</TH><TD class=alignRight headers="br1 br2 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br2 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br2 bc1 bc7">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br2 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br2 bc8 bc14">-</TD></TR><TR><TH id=br3 headers=br1>5-19</TH><TD class=alignRight headers="br1 br3 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br3 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br3 bc1 bc7">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br3 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br3 bc8 bc14">-</TD></TR><TR><TH id=br4 headers=br1>20-44</TH><TD class=alignRight headers="br1 br4 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br4 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br4 bc1 bc7">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br4 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br4 bc8 bc14">-</TD></TR><TR><TH id=br5 headers=br1>45-64</TH><TD class=alignRight headers="br1 br5 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br5 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br5 bc1 bc7">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br5 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br5 bc8 bc14">-</TD></TR><TR><TH id=br6 headers=br1>65+</TH><TD class=alignRight headers="br1 br6 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br6 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br6 bc1 bc7">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br6 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br6 bc8 bc14">-</TD></TR><TR><TH id=br7 headers=br1>Unknown</TH><TD class=alignRight headers="br1 br7 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br7 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br7 bc1 bc7">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br7 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br7 bc8 bc14">-</TD></TR><TR><TH id=br8 headers=br1>Total</TH><TD class=alignRight headers="br1 br8 bc1 bc2 bc3">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc4">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc5">-</TD><TD class=alignRight headers="br1 br8 bc1 bc2 bc6">-</TD><TD class=alignRight headers="br1 br8 bc1 bc7">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc10">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc11">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc12">-</TD><TD class=alignRight headers="br1 br8 bc8 bc9 bc13">-</TD><TD class=alignRight headers="br1 br8 bc8 bc14">-</TD></TR></TBODY></TABLE>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013


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

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    Influenza strain characterizations

    No data on influenza strain characterizations have been reported by the National Microbiology Laboratory (NML) since the start of the 2012-2013 influenza season. However, of the influenza viruses characterized in the months of July and August 2012, the majority (52%) were antigenically similar to B/Wisconsin/01/2010 (Yamagata lineage) while the rest were antigenically similar to either A/Perth/16/2009 (24%) or B/Brisbane/60/2008 (Victoria lineage) (24%). The distribution of influenza strain characterizations for the 2011-2012 influenza season are presented in Figure 6.
    Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 1, 443

    Note: The recommended components for the 2012-2013 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

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    Antiviral resistance

    No data on antiviral resistance have been reported by the National Microbiology Laboratory (NML) since the start of the 2012-2013 influenza season. However, antiviral resistance findings from the 2011-2012 influenza season are presented in Table 3.


    <TABLE class=widthFull border=1 cellSpacing=0 cellPadding=2><CAPTION>Table 3. Antiviral resistance by influenza virus type and subtype, Canada, 2012-2013</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 class=fontSize85 colSpan=7><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="cr2 cc2">256</TD><TD class=alignRight headers="cr2 cc3">0</TD><TD class=alignRight headers="cr2 cc5">255</TD><TD class=alignRight headers="cr2 cc6">0</TD><TD class=alignRight headers="cr2 cc8">450</TD><TD class=alignRight headers="cr2 cc9">449 (99.8%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr3 cc2">256</TD><TD class=alignRight headers="cr3 cc3">0</TD><TD class=alignRight headers="cr3 cc5">256</TD><TD class=alignRight headers="cr3 cc6">0</TD><TD class=alignRight headers="cr3 cc8">356</TD><TD class=alignRight headers="cr3 cc9">356 (100%)</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr4 cc2">967</TD><TD class=alignRight headers="cr4 cc3">0</TD><TD class=alignRight headers="cr4 cc5">967</TD><TD class=alignRight headers="cr4 cc6">0</TD><TD class=alignRight headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignRight headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr5 cc2">1479</TD><TD class=alignRight headers="cr5 cc3">0</TD><TD class=alignRight headers="cr5 cc5">1478</TD><TD class=alignRight headers="cr5 cc6">0</TD><TD class=alignRight headers="cr5 cc8">806</TD><TD class=alignRight headers="cr5 cc9">805 (99.9%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national ILI consultation rate was below expected levels in week 37 (8.0 ILI consultations per 1,000 patient visits); however the ILI rate increased in week 38 to 17.8/1,000 yet remains within the expected levels for this time of year (Figure 7). The highest consultation rates in week 38 were observed in those between 5-19 years of age (55.0/1,000) and in those <5 years of age (34.1/1,000).
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)

    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)
    No laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations have been reported by the Immunization Monitoring Program Active (IMPACT) network since the start of the 2012-2013 influenza season.
    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)
    In weeks 37 and 38, one laboratory-confirmed influenza A-associated hospitalization was reported in NL. The case was >20 years of age and was admitted to ICU. This was the first influenza-associated hospitalization reported this season.
    Note: Influenza-associated hospitalizations are not reported to PHAC by the following Provinces: BC, NU, QC, NS, & 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/.../index-eng.php

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  • Canada FluWatch Weekly Reports 2012-2013 Season Weeks 33 & 34

    August 26 to September 8, 2012 (Weeks 35 & 36)

    Posted 2012-09-14For 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/12-13/w36_12/pdf/fw2012-36-eng.pdf">2011-2012 FluWatch: August 26 to September 8, 2012 (Weeks 35 & 36) (<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; however several regions have reported either sporadic or localized activity over the two-week period (in BC, MB, ON & QC)
    • In weeks 35 and 36, a total of 17 laboratory detections of influenza were reported of which 82.4% were for influenza A viruses (7 A(H3) and 7 A(un-subtyped)) and 17.6% for influenza B viruses
    • One region (in MB) reported localized activity in week 36 due to an outbreak in a long-term care facility
    • No influenza-associated hospitalizations were reported over the two-week period
    • The ILI consultation rate in weeks 35 and 36 were within the expected levels for this time of year
    <HR>NOTE: This is the first surveillance report for the 2012-2013 influenza season.Bi-weekly reports will continue until October 12, 2012. However, laboratory detections reported through the RVDSS and influenza activity level maps will be updated weekly on the FluWatch website.

    Influenza Activity (geographic spread) and Outbreaks

    In week 35, 2 regions (within BC & ON) reported sporadic activity while the rest reported no activity. In week 36, 1 region (within MB) reported localized activity, 2 regions (within ON & QC) reported sporadic activity and the rest reported no activity (see Figure 1). Note that no data was received from AB, SK, NS, PEI and YT for week 35 and no data was received from SK, PEI, NL and YT for week 36. One new outbreak was reported in week 36 in a long-term care facility (Figure 3) in MB and was due to influenza A/H3.
    Figure 1. Map of overall Influenza activity level by province and territory,
    Canada, Week 36





    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, 2012-2013 (N=56)


    ? 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, 2012-2013


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

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    Influenza and Other Respiratory Virus Detections

    The proportion of positive influenza tests increased slightly from two weeks ago (when the percent positive was 0.2%) and was 0.9% in week 35 and 0.6% in week 36 (Figure 4 & 5). The proportion of positive detections for influenza A (0.8% in week 35 and 0.4% in week 36) was slightly higher than the proportion positive for influenza B detections (0.1% and 0.2% respectively). Over the two week period, influenza A detections were reported in BC, AB, MB, ON, QC & NL while influenza B detections were reported in AB, SK & QC.
    Cumulative to date of influenza virus detections by type/subtype is as follows: 82.4% influenza A (50.0% - A(H3) and 50.0% - unsubtyped) and 17.6% influenza B (Table 1).
    Detailed information on age and type/subtype of the positive influenza cases to date will be presented once more information becomes available (Table 2).
    The percentage positive for rhinovirus detections was similar to previous weeks (18.0% & 23.1% in weeks 35 & 36 respectively) and remains the highest compared to the other respiratory viruses. The percentage positive for parainfluenza viruses continued to decline and was 1.7% in week 36. The percentage positive for the other respiratory viruses in week 36 remained low: RSV-.7%; adenovirus-1.1%; hMPV-0.8%; and coronavirus-0.7% (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, 2012-2013
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=ar1 rowSpan=3>Reporting provinces</TH><TH id=ac1 colSpan=6>Weekly
    (August 26 to September 8, 2012)
    </TH><TH id=ac9 colSpan=6>Cumulative
    (August 28, 2012 to September 8, 2012)
    </TH></TR><TR class=bg-colour-yellow><TH id=ac2 colSpan=5 headers=ac1>Influenza A</TH><TH id=ac8 headers=ac1>Influenza
    B
    </TH><TH id=ac10 colSpan=5 headers=ac9>Influenza A</TH><TH id=ac16 headers=ac9>Influenza
    B
    </TH></TR><TR class=bg-colour-yellow><TH id=ac3 headers=ac2>A Total</TH><TH id=ac4 headers=ac2>A(H1)</TH><TH id=ac5 headers=ac2>A(H3)</TH><TH id=ac6 headers=ac2>Pand H1N1</TH><TH id=ac7 class=noWrap headers=ac2>A
    ( <ABBR title=unsubtyped>Un S</ABBR>)Table 1 note*
    </TH><TH headers="ac1 ac8">Total</TH><TH id=ac11 headers=ac10>A Total</TH><TH id=ac12 headers=ac10>A(H1)</TH><TH id=ac13 headers=ac10>A(H3)</TH><TH id=ac14 headers=ac10>Pand H1N1</TH><TH id=ac15 class=noWrap headers=ac10>A
    (Un S) Table 1 note*
    </TH><TH headers=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: 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-yellow headers=ar1><ABBR title="British Columbia ">BC</ABBR></TH><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac3">2</TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac4">0</TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac5">1</TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac6">0</TD><TD class=alignCenter headers="ar1 ar2 ac1 ac2 ac7">1</TD><TD class=alignCenter headers="ar1 ar2 ac1 ac8">0</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac11">2</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac12">0</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac13">1</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac14">0</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac10 ac15">1</TD><TD class=alignCenter headers="ar1 ar2 ac9 ac16">0</TD></TR><TR><TH id=ar3 class=bg-colour-yellow headers=ar1><ABBR title=Alberta>AB</ABBR></TH><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac3">2</TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac4">0</TD><TD class=alignCenter headers="ar1 ar3 ac1 ac2 ac5">1</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">1</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">1</TD><TD class=alignCenter headers="ar1 ar3 ac9 ac10 ac14">0</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-yellow headers=ar1><ABBR title=Saskatchewan>SK</ABBR></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">1</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">1</TD></TR><TR><TH id=ar5 class=bg-colour-yellow headers=ar1><ABBR title=Manitoba>MB</ABBR></TH><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac3">3</TD><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac4">0</TD><TD class=alignCenter headers="ar1 ar5 ac1 ac2 ac5">3</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">3</TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac12">0</TD><TD class=alignCenter headers="ar1 ar5 ac9 ac10 ac13">3</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-yellow headers=ar1><ABBR title=Ontario>ON</ABBR></TH><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac3">5</TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac4">0</TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac5">2</TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac6">0</TD><TD class=alignCenter headers="ar1 ar6 ac1 ac2 ac7">3</TD><TD class=alignCenter headers="ar1 ar6 ac1 ac8">0</TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac11">5</TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac12">0</TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac13">2</TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac14">0</TD><TD class=alignCenter headers="ar1 ar6 ac9 ac10 ac15">3</TD><TD class=alignCenter headers="ar1 ar6 ac9 ac16">0</TD></TR><TR><TH id=ar7 class=bg-colour-yellow headers=ar1><ABBR title=Quebec>QC</ABBR>

    </TH><TD class=alignCenter headers="ar1 ar7 ac1 ac2 ac3">1</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">1</TD><TD class=alignCenter headers="ar1 ar7 ac1 ac8">1</TD><TD class=alignCenter headers="ar1 ar7 ac9 ac10 ac11">1</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">1</TD><TD class=alignCenter headers="ar1 ar7 ac9 ac16">1</TD></TR><TR><TH id=ar8 class=bg-colour-yellow headers=ar1><ABBR title="New Brunswick">NB</ABBR>

    </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-yellow headers=ar1><ABBR title="Nova Scotia ">NS</ABBR>

    </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-yellow headers=ar1><ABBR title="Prince Edward Island ">PE</ABBR>

    </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-yellow headers=ar1><ABBR title="Newfoundland/Labrador ">NL</ABBR>

    </TH><TD class=alignCenter headers="ar1 ar11 ac1 ac2 ac3">1</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">1</TD><TD class=alignCenter headers="ar1 ar11 ac1 ac8">0</TD><TD class=alignCenter headers="ar1 ar11 ac9 ac10 ac11">1</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">1</TD><TD class=alignCenter headers="ar1 ar11 ac9 ac16">0</TD></TR><TR><TH id=ar12 class=bg-colour-yellow headers=ar1>Canada</TH><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac3">14</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac4">0</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac5">7</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac6">0</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac2 ac7">7</TD><TD class=alignCenter headers="ar1 ar12 ac1 ac8">3</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac11">14</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac12">0</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac13">7</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac14">0</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac10 ac15">7</TD><TD class=alignCenter headers="ar1 ar12 ac9 ac16">3</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, 2012-2013 Table 2 note*
    </CAPTION><THEAD><TR class=bg-colour-yellow><TH id=br1 rowSpan=3>Age groups</TH><TH id=bc1 colSpan=5>Weekly
    (August 26 to September 8, 2012)
    </TH><TH id=bc8 colSpan=5>Cumulative
    (Aug. 28, 2012 to September 8, 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=bc2>A Total</TH><TH id=bc4 headers=bc2>Pandemic H1N1</TH><TH id=bc5 headers=bc2>A/H3N2</TH><TH id=bc6 headers=bc2>A unsubtyped</TH><TH headers="bc1 bc7">Total</TH><TH id=bc10 headers=bc9>A Total</TH><TH id=bc11 headers=bc9>Pandemic H1N1</TH><TH id=bc12 headers=bc9>A/H3N2</TH><TH id=bc13 headers=bc9>A unsubtyped</TH><TH headers=bc14>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 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>

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    Figure 4. Influenza tests reported and percentage of tests positive, Canada,
    by report week, 2012-2013


    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, 2012-2013

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

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    Influenza strain characterizations

    The National Microbiology Laboratory (NML) has not received any influenza virus specimens for strain characterization since the start of the 2012-2013 influenza season. However, of the influenza viruses characterized in the months of July and August 2012, the majority (52%) were antigenically similar to B/Wisconsin/01/2010 (Yamagata lineage) while the rest were antigenically similar to either A/Perth/16/2009 (24%) or B/Brisbane/60/2008 (Victoria lineage) (24%). The distribution of influenza strain characterizations for the 2011-2012 influenza season are presented in Figure 6.
    Figure 6. Influenza strain characterizations, Canada, 2011-2012, N = 1, 443

    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

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    Antiviral resistance

    The National Microbiology Laboratory (NML) has not received any influenza virus specimens for antiviral resistance testing since the start of the 2012-2013 influenza season. However, antiviral resistance findings from the 2011-2012 influenza season are presented in 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 class=fontSize85 colSpan=7><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="cr2 cc2">256</TD><TD class=alignRight headers="cr2 cc3">0</TD><TD class=alignRight headers="cr2 cc5">255</TD><TD class=alignRight headers="cr2 cc6">0</TD><TD class=alignRight headers="cr2 cc8">450</TD><TD class=alignRight headers="cr2 cc9">449 (99.8%)</TD></TR><TR><TH id=cr3 class="alignLeft bg-colour-blue" headers=cr1>A (H1N1)</TH><TD class=alignRight headers="cr3 cc2">256</TD><TD class=alignRight headers="cr3 cc3">0</TD><TD class=alignRight headers="cr3 cc5">256</TD><TD class=alignRight headers="cr3 cc6">0</TD><TD class=alignRight headers="cr3 cc8">356</TD><TD class=alignRight headers="cr3 cc9">356 (100%)</TD></TR><TR><TH id=cr4 class="alignLeft bg-colour-blue" headers=cr1>B</TH><TD class=alignRight headers="cr4 cc2">967</TD><TD class=alignRight headers="cr4 cc3">0</TD><TD class=alignRight headers="cr4 cc5">967</TD><TD class=alignRight headers="cr4 cc6">0</TD><TD class=alignRight headers="cr4 cc8">NA <SUP>*</SUP></TD><TD class=alignRight headers="cr4 cc9">NA <SUP>*</SUP></TD></TR><TR><TH id=cr5 class="alignLeft bg-colour-blue" headers=cr1>TOTAL</TH><TD class=alignRight headers="cr5 cc2">1479</TD><TD class=alignRight headers="cr5 cc3">0</TD><TD class=alignRight headers="cr5 cc5">1478</TD><TD class=alignRight headers="cr5 cc6">0</TD><TD class=alignRight headers="cr5 cc8">806</TD><TD class=alignRight headers="cr5 cc9">805 (99.9%)</TD></TR></TBODY></TABLE>
    Influenza-like Illness (ILI) Consultation Rate

    The national ILI consultation rate remained similar to the rates from two week prior and was 7.6 ILI consultations per 1,000 patient visits in week 35 and 5.6 per 1,000 visits in week 36; both rates were within the expected levels for this time of year (Figure 7). The highest consultation rates by age group were observed in those <5 years of age in both weeks (12.2/1,000 in week 35 and 18.1/1,000 in week 36.
    Figure 7. Influenza-like illness (ILI) consultation rates, Canada, by report week, 2012-2013 compared to 1996/97 through to 2011/12 seasons (with pandemic data suppressed)

    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 Respiratory Illness Surveillance

    Paediatric Influenza Hospitalizations and Deaths (IMPACT)
    No laboratory-confirmed influenza-associated paediatric (16 years of age and under) hospitalizations have been reported by the Immunization Monitoring Program Active (IMPACT) network since the start of the 2012-2013 influenza season.
    Influenza Hospitalizations and Deaths (Aggregate Surveillance System)
    No laboratory-confirmed influenza-associated hospitalizations, ICU admissions or deaths have been reported since the start of the 2012-2013 influenza season.
    Note: Influenza-associated hospitalizations are not reported to PHAC by the following Provinces: BC, NU, QC, NS, & 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/.../index-eng.php
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