Canada FluWatch Weekly Reports 2010-2011 Season Week 20 - 224 deaths total (excluding BC, QC, NB and NU)

Pathfinder · Mar 26, 2010

Re: Canada - FluWatch Pandemic (H1N1) virus Surveillance Week 10 - 429 deaths Total

Re: Canada - FluWatch Pandemic (H1N1) virus Surveillance Week 10 - 429 deaths Total

March 14 to March 20, 2010 (Week 11)

Posted 2010-03-26

Weekly and cumulative numbers of hospitalized cases, ICU admissions and deaths among Pandemic H1N1 2009 confirmed cases, Canada, April 12, 2009 to March 20, 2010<SUP>?</SUP>

<TABLE class="widthFull fontSize85" cellSpacing=0 cellPadding=2 border=1><TFOOT><TR><TD colSpan=10><SUP id=star>*</SUP>Based on reporting date.
<SUP id=dstar>**</SUP>Based on epidemiological date, hospitalization date, death date and reporting date.
<SUP>1</SUP> Aggregate counts were reported this week.
? Note that due to reporting delays, some provinces and territories reported retrospectively on first and second wave cases.

</TD></TR></TFOOT><TBODY><TR class=alignCenter><TH class=bg-colour-blue scope=col rowSpan=2>Province/
Territory
</TH><TH class=bg-colour-blue scope=colgroup colSpan=3>Week 11
(March 14 to March 20, 2011)*
</TH><TH class=bg-colour-blue scope=colgroup colSpan=3>Total (From April 12, 2009 to
March 20, 2010)**
</TH></TR><TR class=alignCenter><TH class=bg-colour-blue scope=col>Hospitalized cases</TH><TH class=bg-colour-blue scope=col>ICU admissions</TH><TH class=bg-colour-blue scope=col>Deaths</TH><TH class=bg-colour-blue scope=col>Hospitalized cases</TH><TH class=bg-colour-blue scope=col>ICU admissions</TH><TH class=bg-colour-blue scope=col>Deaths</TH></TR><TR><TH class=bg-colour-blue scope=row>BC<SUP>1</SUP></TH><TD class=alignCenter>3</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1083</TD><TD class=alignCenter>168</TD><TD class=alignCenter>57</TD></TR><TR><TH class=bg-colour-blue scope=row>AB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1276</TD><TD class=alignCenter>239</TD><TD class=alignCenter>71</TD></TR><TR><TH class=bg-colour-blue scope=row>SK</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>67</TD><TD class=alignCenter>52</TD><TD class=alignCenter>15</TD></TR><TR><TH class=bg-colour-blue scope=row>MB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>379</TD><TD class=alignCenter>61</TD><TD class=alignCenter>11</TD></TR><TR><TH class=bg-colour-blue scope=row>ON</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1843</TD><TD class=alignCenter>319</TD><TD class=alignCenter>128</TD></TR><TR><TH class=bg-colour-blue scope=row>QC</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3063</TD><TD class=alignCenter>465</TD><TD class=alignCenter>108</TD></TR><TR><TH class=bg-colour-blue scope=row>NB<SUP>1</SUP></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>163</TD><TD class=alignCenter>34</TD><TD class=alignCenter>8</TD></TR><TR><TH class=bg-colour-blue scope=row>NS</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>293</TD><TD class=alignCenter>50</TD><TD class=alignCenter>7</TD></TR><TR><TH class=bg-colour-blue scope=row>PE</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>50</TD><TD class=alignCenter>9</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NL</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>308</TD><TD class=alignCenter>60</TD><TD class=alignCenter>18</TD></TR><TR><TH class=bg-colour-blue scope=row>YT</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>15</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD></TR><TR><TH class=bg-colour-blue scope=row>NT</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>52</TD><TD class=alignCenter>7</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row>NU<SUP>1 ?</SUP></TH><TD class=alignCenter>5</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>85</TD><TD class=alignCenter>6</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>8</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>8677</TD><TD class=alignCenter>1473</TD><TD class=alignCenter>428</TD></TR></TBODY></TABLE>

To date, the national cumulative crude hospitalization rate was 25.7 per 100,000 population with the highest rates in children less than 5 years of age (100.5 per 100,000). The cumulative crude mortality rate was 1.3 per 100,000 population with those 45 years and older having the highest mortality rate (2.1 per 100,000). The national crude ICU admission rate was 4.4 per 100,000 population. The ICU admission rate was highest in adults 45 to 64 years (6.4 per 100,000) as well as children under five years of age (6.2 per 100,000).
Descriptive characteristics of laboratory-confirmed Canadian pandemic H1N1 2009 hospitalized cases, ICU-admitted cases and deaths with core information available, reported to PHAC as of March 20, 2010<SUP><SUP>?</SUP> </SUP>

<TABLE class=fontSize85 cellSpacing=0 cellPadding=2 border=1><TBODY><TR class=alignCenter><TD rowSpan=2></TD><TH class=bg-colour-blue colSpan=3>From April 12 to August 29, 2009</TH><TH class=bg-colour-blue colSpan=3>From August 30, 2009 to March 20, 2010</TH><TH class=bg-colour-blue colSpan=3>From
April 12, 2009 to March 20, 2010
</TH></TR><TR class=alignCenter><TH class=bg-colour-blue>Hospitalized cases (n=1490)</TH><TH class=bg-colour-blue>ICU-admitted
(n=292)
</TH><TH class=bg-colour-blue>Deaths
(n=77)
</TH><TH class=bg-colour-blue>Hospitalized
cases (n=6734)
</TH><TH class=bg-colour-blue>ICU-admitted
(n=1180)
</TH><TH class=bg-colour-blue>Deaths
(n=346)
</TH><TH class=bg-colour-blue>Hospitalized
cases
(n=8224)
</TH><TH class=bg-colour-blue>ICU-admitted
(n=1472)
</TH><TH class=bg-colour-blue>Deaths
(n=423)
</TH></TR><TR><TH class="bg-colour-blue alignLeft">Females, %</TH><TD class=alignCenter>51.4</TD><TD class=alignCenter>57.2</TD><TD class=alignCenter>62.3</TD><TD class=alignCenter>49.7</TD><TD class=alignCenter>49.4</TD><TD class=alignCenter>46.8</TD><TD class=alignCenter>50.0</TD><TD class=alignCenter>51.0</TD><TD class=alignCenter>49.6</TD></TR><TR><TH class="bg-colour-blue alignLeft">Median age</TH><TD class=alignCenter>23.0</TD><TD class=alignCenter>37.0</TD><TD class=alignCenter>51.0</TD><TD class=alignCenter>30.0</TD><TD class=alignCenter>47.0</TD><TD class=alignCenter>54.0</TD><TD class=alignCenter>29.0</TD><TD class=alignCenter>46.0</TD><TD class=alignCenter>53.0</TD></TR><TR><TH class="bg-colour-blue alignLeft">Aboriginal status<SUP>1</SUP>, % </TH><TD class=alignCenter>20.1-27.9</TD><TD class=alignCenter>16.1-21.9</TD><TD class=alignCenter>11.7-17.6</TD><TD class=alignCenter>4.6-6.1</TD><TD class=alignCenter>5.8-7.7</TD><TD class=alignCenter>6.1-8.9</TD><TD class=alignCenter>7.4-10.0</TD><TD class=alignCenter>7.8-10.4</TD><TD class=alignCenter>7.1-10.4</TD></TR><TR><TH class="bg-colour-blue alignLeft">Underlying medical
conditions<SUP>2</SUP>, %
</TH><TD class=alignCenter>47.5
(653/1374)
</TD><TD class=alignCenter>60.2
(162/269)
</TD><TD class=alignCenter>73.3
(55/75)
</TD><TD class=alignCenter>58.6
(1920/3276)
</TD><TD class=alignCenter>73.1
(669/915)
</TD><TD class=alignCenter>84.2
(240/285)
</TD><TD class=alignCenter>55.3
(2573/4650)
</TD><TD class=alignCenter>70.2
(831/1184)
</TD><TD class=alignCenter>81.9
(295/360)
</TD></TR><TR><TH class="bg-colour-blue alignLeft">Pregnancy<SUP>3</SUP>, %</TH><TD class=alignCenter>27.6 (75/272)</TD><TD class=alignCenter>19.7 (15/76)</TD><TD class=alignCenter>28.6 (4/14)</TD><TD class=alignCenter>18.2 (187/1027)</TD><TD class=alignCenter>8.3 (15/180)</TD><TD class=alignCenter>0.0 (0/36)</TD><TD class=alignCenter>20.2 (262/1299)</TD><TD class=alignCenter>11.7 (30/256)</TD><TD class=alignCenter>8.0 (4/50)</TD></TR><TR><TD colSpan=10><SUP>1 </SUP>Since Aboriginal status is not reported by two provinces (which comprise 23% of the Aboriginal population) two methods were used to calculate proportions: one proportion was calculated by including ON and NS cases in the denominator (which is an underestimate of the true proportion); while the other proportion was calculated by excluding ON and NS cases in the denominator (which is an overestimate).
<SUP>2</SUP> Proportion of cases with at least one underlying medical condition (excluding pregnancy) among those for whom the information was available.
<SUP>3 </SUP>Percent of pregnant women among women 15 to 44 years of age.
? All cases admitted to ICU are included in the hospitalization count; however, not all the fatal cases have been hospitalized before dying.

</TD></TR></TBODY></TABLE>

Overall Influenza Summary - Week 11 (March 14 to March 20, 2010)

Overall influenza activity has remained low for at least 13 consecutive weeks and all influenza indicators were still considerably below expected levels for this time of the year. The proportion of tests that were positive for influenza during week 11 (0.39%, 9/2,321) remained at a very low level for this time of year.
In week 11, eleven regions in BC, ON, QC & NS reported sporadic activity, while 42 regions reported no activity. One region in BC is not reporting until further notice. No influenza outbreaks were reported this week.

<TABLE class=widthFull cellSpacing=0 cellPadding=0><TBODY><TR class=alignCenter><TD colSpan=2>Map of overall Influenza activity level by provinces and territories, Week 11, Canada

</TD></TR><TR class=alignCenter><TD>

</TD><TD><TABLE cellSpacing=0 cellPadding=1 border=0><TBODY><TR><TD align=middle><TABLE class=border-lite cellSpacing=1 cellPadding=1><TBODY><TR align=middle><TD>No Data </TD><TD>

</TD></TR><TR class=alignCenter><TD>No Activity</TD><TD>

</TD></TR><TR class=alignCenter><TD>Sporadic Activity</TD><TD>

</TD></TR><TR align=middle><TD>Localized Activity</TD><TD>

</TD></TR><TR align=middle><TD>Widespread
Activity
</TD><TD>

</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR><TR><TD class=fontSize85 colSpan=2>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.

</TD></TR></TBODY></TABLE>
Number of influenza surveillance regions<SUP>?</SUP> reporting widespread or localized influenza activity,
Canada, by report week, 2009-2010 (N=54)

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

Overall Number of Influenza Outbreaks, Canada, by Report Week, 2009-2010

Note that this was the first year that all the provinces and territories were reporting on influenza outbreaks in schools (greater than 10% absenteeism on any day most likely due to ILI) which has increased considerably the total number of outbreaks reported compared to previous years.

ILI consultation rate
During week 11, the national ILI consultation rate was 7.7 consultations per 1,000 patient visits (see ILI graph) which was still considerably below the expected range for this time of year (range from 22.8 to 42.2 consultations per 1,000 patient visits). All reporting provinces and territories had similar or lower ILI consultation rates compared to their respective ILI rates in the previous weeks except PE which had a higher rate this week. Those under 20 years of age still had the highest consultation rates: 22.1 per 1,000 among children under 5 years of age and 8.6 per 1,000 among those 5 to 19 years of age.
Influenza-like illness (ILI) consultation rates, Canada, by report week,
2009-2010 compared to 1996/97 through to 2008/09 seasons

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.
Laboratory Surveillance Summary
The proportion of tests that were positive for influenza during week 11 (0.39%, 9/2,321) increased slightly compared to the previous week, but still remained at a very low level for this time of year (see Tests table). Of the nine positive specimens, seven (78%) were positive for pandemic H1N1 2009, one (11%) was unsubtyped influenza A and one (11%) was positive for influenza B. All provinces had a lower proportion of positive tests for influenza compared to the previous weeks except BC and ON which had a higher rate and were the only provinces to report positive specimens this week. Note that since August 30, 2009, influenza A/H3N2 detections were highest in QC (85% or 44/52) and influenza B detections were highest in QC (45% or 9/20) and ON (55% or 11/20). Respiratory syncytial virus detections peaked during week 7 (28.3%), but were still high this week with a proportion of positive tests of 18.4%. Positive specimens for RSV were reported from all provinces (data not shown). The proportion of positive parainfluenza (2.9%) and adenovirus (1.7%) tests remained low during week 11.

Influenza tests reported and percentage of tests positive, Canada,
by report week, 2009-2010

Percent positive influenza tests, compared to other respiratory viruses, Canada,
by reporting week, 2009-2010

Weekly & Cumulative numbers of positive influenza specimens, by Provincial Laboratories, Canada, 2009-2010

<TABLE class=widthFull cellSpacing=0 cellPadding=2 border=1><TFOOT><TR><TD class=fontSize85 colSpan=13>Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.
* Not subtyped

</TD></TR></TFOOT><TBODY><TR class=alignCenter><TH class=bg-colour-blue scope=col rowSpan=3>Reporting provinces</TH><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=6>Weekly (March 14 to March 20, 2010)</TH><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=6>Cumulative (August 30, 2009 to March 20, 2010)</TH></TR><TR class=alignCenter><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=5>Influenza A</TH><TH class="bg-colour-blue fontSize85" scope=col>B</TH><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=5>Influenza A</TH><TH class=bg-colour-blue scope=col>B</TH></TR><TR class=alignCenter><TH class="fontSize85 bg-colour-blue" scope=col>A Total</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H1)</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H3)</TH><TH class="fontSize85 bg-colour-blue" scope=col>Pand H1N1</TH><TH class="fontSize85 bg-colour-blue" scope=col>A
(NS)*
</TH><TH class="fontSize85 bg-colour-blue" scope=col>Total</TH><TH class="fontSize85 bg-colour-blue" scope=col>A Total</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H1)</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H3)</TH><TH class="fontSize85 bg-colour-blue" scope=col>Pand H1N1</TH><TH class="fontSize85 bg-colour-blue" scope=col>A
(NS)*
</TH><TH class="fontSize85 bg-colour-blue" scope=col>Total</TH></TR><TR><TH class=bg-colour-blue scope=row>BC</TH><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>6378</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>5812</TD><TD class=alignCenter>565</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>AB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>5868</TD><TD class=alignCenter>2</TD><TD class=alignCenter>5</TD><TD class=alignCenter>5760</TD><TD class=alignCenter>101</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>SK</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2598</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>2298</TD><TD class=alignCenter>299</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>MB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1915</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1788</TD><TD class=alignCenter>127</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>ON</TH><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1</TD><TD class=alignCenter>7804</TD><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3559</TD><TD class=alignCenter>4241</TD><TD class=alignCenter>11</TD></TR><TR><TH class=bg-colour-blue scope=row>QC</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>10699</TD><TD class=alignCenter>4</TD><TD class=alignCenter>44</TD><TD class=alignCenter>10649</TD><TD class=alignCenter>2</TD><TD class=alignCenter>9</TD></TR><TR><TH class=bg-colour-blue scope=row>NB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1856</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1835</TD><TD class=alignCenter>19</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NS</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>787</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>753</TD><TD class=alignCenter>34</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>PE</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>97</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>96</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NL</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>951</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>951</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>8</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>7</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1</TD><TD class=alignCenter>38953</TD><TD class=alignCenter>11</TD><TD class=alignCenter>52</TD><TD class=alignCenter>33501</TD><TD class=alignCenter>5389</TD><TD class=alignCenter>20</TD></TR><TR><TD class=alignCenter scope=row colSpan=13>Specimens from NT, YT, and NU are sent to reference laboratories in other provinces </TD></TR></TBODY></TABLE>

/.../

http://www.phac-aspc.gc.ca/fluwatch/09-10/w11_10/index-eng.php

Pathfinder · Apr 3, 2010

Re: Canada - FluWatch Pandemic (H1N1) virus Surveillance Week 12 - 428 deaths Total

Re: Canada - FluWatch Pandemic (H1N1) virus Surveillance Week 12 - 428 deaths Total

<H1>March 21 to March 27, 2010 (Week 12)</H1>

Posted 2010-04-01

Weekly and cumulative numbers of hospitalized cases, ICU admissions and deaths among Pandemic H1N1 2009 confirmed cases, Canada, April 12, 2009 to March 27, 2010<SUP>?</SUP>

<TABLE class="widthFull fontSize85" cellSpacing=0 cellPadding=2 border=1><TFOOT><TR><TD colSpan=10><SUP id=star>*</SUP>Based on reporting date.
<SUP id=dstar>**</SUP>Based on epidemiological date, hospitalization date, death date and reporting date.
<SUP>1</SUP> Aggregate counts were reported this week.
? Note that due to reporting delays, some provinces and territories reported retrospectively on first and second wave cases.
</TD></TR></TFOOT><TBODY><TR class=alignCenter><TH class=bg-colour-blue scope=col rowSpan=2>Province/
Territory</TH><TH class=bg-colour-blue scope=colgroup colSpan=3>Week 12
(From March 21 to March 27, 2010)*</TH><TH class=bg-colour-blue scope=colgroup colSpan=3>Total (From April 12, 2009 to
March 27, 2010)**</TH></TR><TR class=alignCenter><TH class=bg-colour-blue scope=col>Hospitalized cases</TH><TH class=bg-colour-blue scope=col>ICU admissions</TH><TH class=bg-colour-blue scope=col>Deaths</TH><TH class=bg-colour-blue scope=col>Hospitalized cases</TH><TH class=bg-colour-blue scope=col>ICU admissions</TH><TH class=bg-colour-blue scope=col>Deaths</TH></TR><TR><TH class=bg-colour-blue scope=row>BC<SUP>1</SUP></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1083</TD><TD class=alignCenter>168</TD><TD class=alignCenter>57</TD></TR><TR><TH class=bg-colour-blue scope=row>AB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1276</TD><TD class=alignCenter>239</TD><TD class=alignCenter>71</TD></TR><TR><TH class=bg-colour-blue scope=row>SK</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>67</TD><TD class=alignCenter>52</TD><TD class=alignCenter>15</TD></TR><TR><TH class=bg-colour-blue scope=row>MB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>379</TD><TD class=alignCenter>61</TD><TD class=alignCenter>11</TD></TR><TR><TH class=bg-colour-blue scope=row>ON</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1843</TD><TD class=alignCenter>319</TD><TD class=alignCenter>128</TD></TR><TR><TH class=bg-colour-blue scope=row>QC</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3063</TD><TD class=alignCenter>465</TD><TD class=alignCenter>108</TD></TR><TR><TH class=bg-colour-blue scope=row>NB<SUP>1</SUP></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>163</TD><TD class=alignCenter>34</TD><TD class=alignCenter>8</TD></TR><TR><TH class=bg-colour-blue scope=row>NS</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>293</TD><TD class=alignCenter>50</TD><TD class=alignCenter>7</TD></TR><TR><TH class=bg-colour-blue scope=row>PE</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>50</TD><TD class=alignCenter>9</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NL</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>308</TD><TD class=alignCenter>60</TD><TD class=alignCenter>18</TD></TR><TR><TH class=bg-colour-blue scope=row>YT</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>15</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD></TR><TR><TH class=bg-colour-blue scope=row>NT</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>52</TD><TD class=alignCenter>7</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row>NU<SUP>1</SUP></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>85</TD><TD class=alignCenter>6</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>8677</TD><TD class=alignCenter>1473</TD><TD class=alignCenter>428</TD></TR></TBODY></TABLE>

To date, the national cumulative crude hospitalization rate was 25.7 per 100,000 population with the highest rates in children less than 5 years of age (100.4 per 100,000). The cumulative crude mortality rate was 1.3 per 100,000 population with those 45 years and older having the highest mortality rate (2.1 per 100,000). The national crude ICU admission rate was 4.4 per 100,000 population. The ICU admission rate was highest in adults 45 to 64 years (6.4 per 100,000) as well as children under five years of age (6.2 per 100,000).
Descriptive characteristics of laboratory-confirmed Canadian pandemic H1N1 2009 hospitalized cases, ICU-admitted cases and deaths with core information available, reported to PHAC as of March 27, 2010<SUP><SUP>?</SUP> </SUP>

<TABLE class=fontSize85 cellSpacing=0 cellPadding=2 border=1><TBODY><TR class=alignCenter><TD rowSpan=2> </TD><TH class=bg-colour-blue colSpan=3>From
April 12 to August 29, 2009</TH><TH class=bg-colour-blue colSpan=3>From
August 30, 2009 to March 27, 2010</TH><TH class=bg-colour-blue colSpan=3>From
April 12, 2009 to March 27, 2010</TH></TR><TR class=alignCenter><TH class=bg-colour-blue>Hospitalized cases (n=1490)</TH><TH class=bg-colour-blue>ICU-admitted
(n=292)</TH><TH class=bg-colour-blue>Deaths
(n=77)</TH><TH class=bg-colour-blue>Hospitalized
cases (n=6737)</TH><TH class=bg-colour-blue>ICU-admitted
(n=1181)</TH><TH class=bg-colour-blue>Deaths
(n=346)</TH><TH class=bg-colour-blue>Hospitalized
cases
(n=8227)</TH><TH class=bg-colour-blue>ICU-admitted
(n=1473)</TH><TH class=bg-colour-blue>Deaths
(n=423)</TH></TR><TR><TH class="bg-colour-blue alignLeft">Females, %</TH><TD class=alignCenter>51.4</TD><TD class=alignCenter>57.2</TD><TD class=alignCenter>62.3</TD><TD class=alignCenter>49.7</TD><TD class=alignCenter>49.4</TD><TD class=alignCenter>46.8</TD><TD class=alignCenter>50.0</TD><TD class=alignCenter>51.0</TD><TD class=alignCenter>49.6</TD></TR><TR><TH class="bg-colour-blue alignLeft">Median age</TH><TD class=alignCenter>23.0</TD><TD class=alignCenter>37.0</TD><TD class=alignCenter>51.0</TD><TD class=alignCenter>30.0</TD><TD class=alignCenter>47.0</TD><TD class=alignCenter>54.0</TD><TD class=alignCenter>29.0</TD><TD class=alignCenter>46.0</TD><TD class=alignCenter>53.0</TD></TR><TR><TH class="bg-colour-blue alignLeft">Aboriginal status<SUP>1</SUP>, % </TH><TD class=alignCenter>20.1-27.8</TD><TD class=alignCenter>16.1-21.9</TD><TD class=alignCenter>11.7-17.6</TD><TD class=alignCenter>4.6-6.1</TD><TD class=alignCenter>5.8-7.6</TD><TD class=alignCenter>6.1-8.9</TD><TD class=alignCenter>7.4-10.0</TD><TD class=alignCenter>7.8-10.4</TD><TD class=alignCenter>7.1-10.4</TD></TR><TR><TH class="bg-colour-blue alignLeft">Underlying medical
conditions<SUP>2</SUP>, %</TH><TD class=alignCenter>47.5
(653/1374)</TD><TD class=alignCenter>60.2
(162/269)</TD><TD class=alignCenter>73.3
(55/75)</TD><TD class=alignCenter>59.3
(1955/3295)</TD><TD class=alignCenter>73.9
(683/924)</TD><TD class=alignCenter>85.1
(246/289)</TD><TD class=alignCenter>55.9
(2608/4669)</TD><TD class=alignCenter>70.8
(845/1193)</TD><TD class=alignCenter>82.7
(301/364)</TD></TR><TR><TH class="bg-colour-blue alignLeft">Pregnancy<SUP>3</SUP>, %</TH><TD class=alignCenter>27.6
(75/272)</TD><TD class=alignCenter>19.7
(15/76)</TD><TD class=alignCenter>28.6
(4/14)</TD><TD class=alignCenter>18.2
(187/1027)</TD><TD class=alignCenter>8.3
(15/180)</TD><TD class=alignCenter>0.0
(0/36)</TD><TD class=alignCenter>20.2
(262/1299)</TD><TD class=alignCenter>11.7
(30/256)</TD><TD class=alignCenter>8.0
(4/50)</TD></TR><TR><TD colSpan=10><SUP>1 </SUP>Since Aboriginal status is not reported by two provinces (which comprise 23% of the Aboriginal population) two methods were used to calculate proportions: one proportion was calculated by including ON and NS cases in the denominator (which is an underestimate of the true proportion); while the other proportion was calculated by excluding ON and NS cases in the denominator (which is an overestimate).
<SUP>2</SUP> Proportion of cases with at least one underlying medical condition (excluding pregnancy) among those for whom the information was available. Please note that results may differ slightly compared to the previous weeks due to updates in the national database.
<SUP>3 </SUP>Percent of pregnant women among women 15 to 44 years of age.
? All cases admitted to ICU are included in the hospitalization count; however, not all the fatal cases have been hospitalized before dying.
</TD></TR></TBODY></TABLE>

Overall Influenza Summary - Week 12 (March 21 to March 27, 2010)

Overall influenza activity has remained low for at least 14 consecutive weeks. All influenza indicators were still below expected levels for this time of the year. The proportion of tests that were positive for influenza during week 12 (0.32%, 7/2,177) remained at a low level for this time of year.
In week 12, twelve regions in BC, ON, QC & NS reported sporadic activity, while 41 regions reported no activity. One region in BC is not reporting until further notice. No influenza outbreaks were reported this week.

<TABLE class=widthFull cellSpacing=0 cellPadding=0><TBODY><TR class=alignCenter><TD colSpan=2>Map of overall Influenza activity level by provinces and territories, Week 12, Canada

</TD></TR><TR class=alignCenter><TD>

</TD><TD><TABLE cellSpacing=0 cellPadding=1 border=0><TBODY><TR><TD align=middle><TABLE class=border-lite cellSpacing=1 cellPadding=1><TBODY><TR align=middle><TD>No Data </TD><TD>

</TD></TR><TR class=alignCenter><TD>No Activity</TD><TD>

</TD></TR><TR class=alignCenter><TD>Sporadic Activity</TD><TD>

</TD></TR><TR align=middle><TD>Localized Activity</TD><TD>

</TD></TR><TR align=middle><TD>Widespread
Activity</TD><TD>

</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR><TR><TD class=fontSize85 colSpan=2>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.
</TD></TR></TBODY></TABLE>
Number of influenza surveillance regions<SUP>?</SUP> reporting widespread or localized influenza activity,
Canada, by report week, 2009-2010 (N=54)

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

Overall Number of Influenza Outbreaks, Canada, by Report Week, 2009-2010

Note that this was the first year that all the provinces and territories were reporting on influenza outbreaks in schools (greater than 10% absenteeism on any day most likely due to ILI) which has increased considerably the total number of outbreaks reported compared to previous years.

ILI consultation rate
During week 12, the national ILI consultation rate was 20.8 consultations per 1,000 patient visits (see ILI graph) which was higher than the previous weeks, but remained slightly below the expected range for this time of year (range from 22.5 to 37.5 consultations per 1,000 patient visits). Those between 20 and 64 years of age had the highest consultation rates this week with 25.2 consultations per 1,000 patient visit followed by children under 5 years of age (23.9 per 1,000).
Influenza-like illness (ILI) consultation rates, Canada, by report week,
2009-2010 compared to 1996/97 through to 2008/09 seasons

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.
Laboratory Surveillance Summary
The proportion of tests that were positive for influenza during week 12 (0.32%, 7/2,177) was similar to the previous week and still remained at a low level for this time of year (see Tests table). Of the seven positive specimens, three (43%) were positive for pandemic H1N1 2009, three (43%) were unsubtyped influenza A and one (14%) was positive for influenza B. Again this week, BC and ON were the only provinces to report positive specimens. Note that since August 30, 2009, influenza A/H3N2 detections were highest in QC (85% or 44/52) and influenza B detections were highest in QC (43% or 9/21) and ON (57% or 12/21). Respiratory syncytial virus detections peaked during week 7 (28.3%), but were still high this week with a proportion of positive tests of 17.7%. Positive specimens for RSV were reported from all provinces (data not shown). The proportion of positive parainfluenza (2.9%) and adenovirus (1.2%) tests remained low during week 12.

Influenza tests reported and percentage of tests positive, Canada,
by report week, 2009-2010

Percent positive influenza tests, compared to other respiratory viruses, Canada,
by reporting week, 2009-2010

Weekly & Cumulative numbers of positive influenza specimens, by Provincial Laboratories, Canada, 2009-2010

<TABLE class=widthFull cellSpacing=0 cellPadding=2 border=1><TFOOT><TR><TD class=fontSize85 colSpan=13>Note: Cumulative data includes updates to previous weeks; due to reporting delays, the sum of weekly report totals do not add up to cumulative totals.
* Not subtyped
</TD></TR></TFOOT><TBODY><TR class=alignCenter><TH class=bg-colour-blue scope=col rowSpan=3>Reporting provinces</TH><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=6>Weekly (March 21 to March 27, 2010)</TH><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=6>Cumulative (August 30, 2009 to March 27, 2010)</TH></TR><TR class=alignCenter><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=5>Influenza A</TH><TH class="bg-colour-blue fontSize85" scope=col>B</TH><TH class="bg-colour-blue fontSize85" scope=colgroup colSpan=5>Influenza A</TH><TH class=bg-colour-blue scope=col>B</TH></TR><TR class=alignCenter><TH class="fontSize85 bg-colour-blue" scope=col>A Total</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H1)</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H3)</TH><TH class="fontSize85 bg-colour-blue" scope=col>Pand H1N1</TH><TH class="fontSize85 bg-colour-blue" scope=col>A
(NS)*</TH><TH class="fontSize85 bg-colour-blue" scope=col>Total</TH><TH class="fontSize85 bg-colour-blue" scope=col>A Total</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H1)</TH><TH class="fontSize85 bg-colour-blue" scope=col>A(H3)</TH><TH class="fontSize85 bg-colour-blue" scope=col>Pand H1N1</TH><TH class="fontSize85 bg-colour-blue" scope=col>A
(NS)*</TH><TH class="fontSize85 bg-colour-blue" scope=col>Total</TH></TR><TR><TH class=bg-colour-blue scope=row>BC</TH><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>6379</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>5813</TD><TD class=alignCenter>565</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>AB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>5868</TD><TD class=alignCenter>2</TD><TD class=alignCenter>5</TD><TD class=alignCenter>5760</TD><TD class=alignCenter>101</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>SK</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2598</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1</TD><TD class=alignCenter>2298</TD><TD class=alignCenter>299</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>MB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1915</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1788</TD><TD class=alignCenter>127</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>ON</TH><TD class=alignCenter>5</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>2</TD><TD class=alignCenter>3</TD><TD class=alignCenter>1</TD><TD class=alignCenter>7809</TD><TD class=alignCenter>4</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3561</TD><TD class=alignCenter>4244</TD><TD class=alignCenter>12</TD></TR><TR><TH class=bg-colour-blue scope=row>QC</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>10699</TD><TD class=alignCenter>4</TD><TD class=alignCenter>44</TD><TD class=alignCenter>10649</TD><TD class=alignCenter>2</TD><TD class=alignCenter>9</TD></TR><TR><TH class=bg-colour-blue scope=row>NB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1856</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1</TD><TD class=alignCenter>1835</TD><TD class=alignCenter>19</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NS</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>787</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>753</TD><TD class=alignCenter>34</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>PE</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>97</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>96</TD><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NL</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>951</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>951</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>6</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD><TD class=alignCenter>1</TD><TD class=alignCenter>38959</TD><TD class=alignCenter>11</TD><TD class=alignCenter>52</TD><TD class=alignCenter>33504</TD><TD class=alignCenter>5392</TD><TD class=alignCenter>21</TD></TR><TR><TD class=alignCenter scope=row colSpan=13>Specimens from NT, YT, and NU are sent to reference laboratories in other provinces </TD></TR></TBODY></TABLE>
http://www.phac-aspc.gc.ca/fluwatch/09-10/w12_10/index-eng.php

Pathfinder · Apr 9, 2010

Re: Canada - FluWatch Pandemic (H1N1) virus Surveillance Week 12 - 428 deaths Total

Re: Canada - FluWatch Pandemic (H1N1) virus Surveillance Week 12 - 428 deaths Total

March 28 to April 3, 2010 (Week 13)

Posted 2010-04-09

Weekly and cumulative numbers of hospitalized cases, ICU admissions and deaths among pandemic H1N1 2009 confirmed cases, Canada, April 12, 2009 to April 3, 2010<SUP>?</SUP>

<TABLE class="widthFull fontSize85" cellSpacing=0 cellPadding=2 border=1><TFOOT><TR><TD colSpan=10><SUP id=star>*</SUP>Based on reporting date.
<SUP id=dstar>**</SUP>Based on epidemiological date, hospitalization date, death date and reporting date.
<SUP>1</SUP> Aggregate counts were reported this week.
? Note that due to reporting delays, some provinces and territories reported retrospectively on first and second wave cases.

</TD></TR></TFOOT><TBODY><TR class=alignCenter><TH class=bg-colour-blue scope=col rowSpan=2>Province/
Territory
</TH><TH class=bg-colour-blue scope=colgroup colSpan=3>Week 13
(From March 28 to April 3, 2010)*
</TH><TH class=bg-colour-blue scope=colgroup colSpan=3>Total (From April 12, 2009 to
April 3, 2010)**
</TH></TR><TR class=alignCenter><TH class=bg-colour-blue scope=col>Hospitalized cases</TH><TH class=bg-colour-blue scope=col>ICU admissions</TH><TH class=bg-colour-blue scope=col>Deaths</TH><TH class=bg-colour-blue scope=col>Hospitalized cases</TH><TH class=bg-colour-blue scope=col>ICU admissions</TH><TH class=bg-colour-blue scope=col>Deaths</TH></TR><TR><TH class=bg-colour-blue scope=row>BC<SUP>1</SUP></TH><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1084</TD><TD class=alignCenter>168</TD><TD class=alignCenter>57</TD></TR><TR><TH class=bg-colour-blue scope=row>AB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1276</TD><TD class=alignCenter>239</TD><TD class=alignCenter>71</TD></TR><TR><TH class=bg-colour-blue scope=row>SK</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>67</TD><TD class=alignCenter>52</TD><TD class=alignCenter>15</TD></TR><TR><TH class=bg-colour-blue scope=row>MB</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>379</TD><TD class=alignCenter>61</TD><TD class=alignCenter>11</TD></TR><TR><TH class=bg-colour-blue scope=row>ON</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>1843</TD><TD class=alignCenter>319</TD><TD class=alignCenter>128</TD></TR><TR><TH class=bg-colour-blue scope=row>QC</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>3063</TD><TD class=alignCenter>465</TD><TD class=alignCenter>108</TD></TR><TR><TH class=bg-colour-blue scope=row>NB<SUP>1</SUP></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>163</TD><TD class=alignCenter>34</TD><TD class=alignCenter>8</TD></TR><TR><TH class=bg-colour-blue scope=row>NS</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>293</TD><TD class=alignCenter>50</TD><TD class=alignCenter>7</TD></TR><TR><TH class=bg-colour-blue scope=row>PE</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>50</TD><TD class=alignCenter>9</TD><TD class=alignCenter>0</TD></TR><TR><TH class=bg-colour-blue scope=row>NL</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>308</TD><TD class=alignCenter>60</TD><TD class=alignCenter>18</TD></TR><TR><TH class=bg-colour-blue scope=row>YT</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>15</TD><TD class=alignCenter>3</TD><TD class=alignCenter>3</TD></TR><TR><TH class=bg-colour-blue scope=row>NT</TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>52</TD><TD class=alignCenter>7</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row>NU<SUP>1</SUP></TH><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>85</TD><TD class=alignCenter>6</TD><TD class=alignCenter>1</TD></TR><TR><TH class=bg-colour-blue scope=row>Canada</TH><TD class=alignCenter>1</TD><TD class=alignCenter>0</TD><TD class=alignCenter>0</TD><TD class=alignCenter>8678</TD><TD class=alignCenter>1473</TD><TD class=alignCenter>428</TD></TR></TBODY></TABLE>
To date, the national cumulative crude hospitalization rate was 25.7 per 100,000 population with the highest rates in children less than 5 years of age (100.4 per 100,000). The cumulative crude mortality rate was 1.3 per 100,000 population with those 45 years and older having the highest mortality rate (2.1 per 100,000). The national crude ICU admission rate was 4.4 per 100,000 population. The ICU admission rate was highest in adults 45 to 64 years (6.4 per 100,000) as well as children under five years of age (6.2 per 100,000).
Descriptive characteristics of laboratory-confirmed Canadian pandemic H1N1 2009 hospitalized cases, ICU-admitted cases and deaths with core information available, reported to PHAC as of April 3, 2010<SUP><SUP>?</SUP> </SUP>

<TABLE class=fontSize85 cellSpacing=0 cellPadding=2 border=1><TBODY><TR class=alignCenter><TD rowSpan=2></TD><TH class=bg-colour-blue colSpan=3>From
April 12 to August 29, 2009
</TH><TH class=bg-colour-blue colSpan=3>From
August 30, 2009 to April 3, 2010
</TH><TH class=bg-colour-blue colSpan=3>From
April 12, 2009 to April 3, 2010
</TH></TR><TR class=alignCenter><TH class=bg-colour-blue>Hospitalized cases (n=1490)</TH><TH class=bg-colour-blue>ICU-admitted
(n=292)
</TH><TH class=bg-colour-blue>Deaths
(n=77)
</TH><TH class=bg-colour-blue>Hospitalized
cases (n=6737)
</TH><TH class=bg-colour-blue>ICU-admitted
(n=1181)
</TH><TH class=bg-colour-blue>Deaths
(n=346)
</TH><TH class=bg-colour-blue>Hospitalized
cases
(n=8227)
</TH><TH class=bg-colour-blue>ICU-admitted
(n=1473)
</TH><TH class=bg-colour-blue>Deaths
(n=423)
</TH></TR><TR><TH class="bg-colour-blue alignLeft">Females, %</TH><TD class=alignCenter>51.4</TD><TD class=alignCenter>57.2</TD><TD class=alignCenter>62.3</TD><TD class=alignCenter>49.7</TD><TD class=alignCenter>49.4</TD><TD class=alignCenter>46.8</TD><TD class=alignCenter>50.0</TD><TD class=alignCenter>51.0</TD><TD class=alignCenter>49.6</TD></TR><TR><TH class="bg-colour-blue alignLeft">Median age</TH><TD class=alignCenter>23.0</TD><TD class=alignCenter>37.0</TD><TD class=alignCenter>51.0</TD><TD class=alignCenter>30.0</TD><TD class=alignCenter>47.0</TD><TD class=alignCenter>54.0</TD><TD class=alignCenter>29.0</TD><TD class=alignCenter>46.0</TD><TD class=alignCenter>53.0</TD></TR><TR><TH class="bg-colour-blue alignLeft">Aboriginal status<SUP>1</SUP>, % </TH><TD class=alignCenter>20.1-27.8</TD><TD class=alignCenter>16.1-21.9</TD><TD class=alignCenter>11.7-17.6</TD><TD class=alignCenter>4.6-6.1</TD><TD class=alignCenter>5.8-7.6</TD><TD class=alignCenter>6.1-8.9</TD><TD class=alignCenter>7.4-10.0</TD><TD class=alignCenter>7.8-10.4</TD><TD class=alignCenter>7.1-10.4</TD></TR><TR><TH class="bg-colour-blue alignLeft">Underlying medical
conditions<SUP>2</SUP>, %
</TH><TD class=alignCenter>47.5
(653/1374)
</TD><TD class=alignCenter>60.2
(162/269)
</TD><TD class=alignCenter>73.3
(55/75)
</TD><TD class=alignCenter>59.3
(1955/3295)
</TD><TD class=alignCenter>73.9
(683/924)
</TD><TD class=alignCenter>85.1
(246/289)
</TD><TD class=alignCenter>55.9
(2608/4669)
</TD><TD class=alignCenter>70.8
(845/1193)
</TD><TD class=alignCenter>82.7
(301/364)
</TD></TR><TR><TH class="bg-colour-blue alignLeft">Pregnancy<SUP>3</SUP>, %</TH><TD class=alignCenter>27.6
(75/272)
</TD><TD class=alignCenter>19.7
(15/76)
</TD><TD class=alignCenter>28.6
(4/14)
</TD><TD class=alignCenter>18.2
(187/1027)
</TD><TD class=alignCenter>8.3
(15/180)
</TD><TD class=alignCenter>0.0
(0/36)
</TD><TD class=alignCenter>20.2
(262/1299)
</TD><TD class=alignCenter>11.7
(30/256)
</TD><TD class=alignCenter>8.0
(4/50)
</TD></TR><TR><TD colSpan=10><SUP>1 </SUP>Since Aboriginal status is not reported by two provinces (which comprise 23% of the Aboriginal population) two methods were used to calculate proportions: one proportion was calculated by including ON and NS cases in the denominator (which is an underestimate of the true proportion); while the other proportion was calculated by excluding ON and NS cases in the denominator (which is an overestimate).
<SUP>2</SUP> Proportion of cases with at least one underlying medical condition (excluding pregnancy) among those for whom the information was available.
<SUP>3 </SUP>Percent of pregnant women among women 15 to 44 years of age.
? All cases admitted to ICU are included in the hospitalization count; however, not all the fatal cases have been hospitalized before dying.

</TD></TR></TBODY></TABLE>

Overall Influenza Summary - Week 13 (March 28 to April 3, 2010)

Overall influenza activity has remained low for at least 15 consecutive weeks. All influenza indicators were still below expected levels for this time of the year. The proportion of tests that were positive for influenza during week 13 (0.32%, 6/1,858) remained at a low level for this time of year.
In week 13, twelve regions in BC, ON, QC & NS reported sporadic activity, while 41 regions reported no activity. One region in BC is not reporting until further notice. No influenza outbreaks were reported this week.

<TABLE class=widthFull cellSpacing=0 cellPadding=0><TBODY><TR class=alignCenter><TD colSpan=2>Map of overall Influenza activity level by provinces and territories, Week 13, Canada

</TD></TR><TR class=alignCenter><TD>