hornblower
Moderator
Summary:
The overall influenza activity level remain high for this time of the year, but has been decreasing compared to the previous weeks.
? As of 15 July, 2009, all provinces and territories reported a total of 10,156 laboratory-confirmed cases of Pandemic (H1N1) 2009 including 1,115 hospitalizations. Among the hospitalized cases, 156 were admitted to ICU. Forty-five deaths have been reported to the Public Health Agency of Canada (PHAC).
? There was a 21% increase in the reported number of hospitalized Pandemic (H1N1) 2009 cases this week. Since July 8, 2009, eight deaths, one in British Columbia, one in Alberta, one in Manitoba, two in Ontario and three in Quebec were reported this week.
Pandemic (H1N1) 2009 virus Surveillance and Epidemiology
As of 15 July, 2009, all provinces and territories have reported a total of 10,156 laboratory-confirmed cases of Pandemic (H1N1) 2009 virus, of which 1,115 H1N1 cases were admitted to hospital.
Cases were distributed similarly between males and females (51.2% for females, 47.4% for males, 1.3% unknown).
One-hundred and fifty-one cases have been identified as First-Nations (139 cases in MB and 12 cases in BC), thirty cases as Metis (29 cases in MB and 1 case in BC) and 390 cases are from Nunavut, an area with a predominant Inuit population.
Overall the median age of First-Nations cases was similar to that of the rest of Canada (19 years vs. 18 years),
However, Inuit cases were significantly younger with a median age of 9 years.
Core data was available for 954 (85.6%) hospitalizations.
The median age of hospitalized cases was 21 years (range <1 to 97 years). 352 (36.9%) hospitalized cases had at least one underlying medical conditions : chronic heart disease (51 cases), diabetes (75 cases), kidney disease (26 cases), immuno-suppression (56 cases), lung disease including asthma (138 cases). Eighteen (81.8%) of the 22 pregnant women affected were hospitalized.
156 (17.9%) of the hospitalized cases were reported to have been admitted to the intensive care unit (ICU). Slightly more females were admitted to ICU
(50.6% for females, 44.2% for males, 5.1% unknown). The median age of cases admitted to ICU was 31 years (range <1 to 82 years). Fifty-four (34.6%) ICU patients had at least one underlying medical conditions. Three women admitted to ICU were pregnant.
As of July 15, 2009, core data was available fo 38 (84.4%) deaths. The median age was 44 (range <1 to 82) and 55.3% were females. Among these deaths, 15 (39.5%) cases had at least on underlying medical conditions and 1 (2.6%) was pregnant.
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Paediatric Influenza Hospitalizations and deaths
In week 27, 10 laboratory-confirmed influenza-associated paediatric hospitalizations were reported through the Immunization Monitoring Program Active (IMPACT) network. 60% of this week hospitalizations are due to Pandemic (H1N1) 2009. To date this season, 710 hospitalizations have been
reported; 260 (36.6%) of hospitalizations have been due to Pandemic (H1N1) 2009. The proportion of cases to date by age group are as follows: 13.7% were 0-5 month olds; 25.2% were 6-23 month olds; 22.0% were 2-4 year olds; 19.3% were 5-9 year olds; and 19.9% were 10-16 year olds.
There were four deaths reported so far this season including two deaths due to Pandemic (H1N1) 2009.
Laboratory Surveillance Summary
This week, the proportion of tests that were positive for influenza was 13.4% which is decreasing compared to previous weeks (see table). The majority (81.6%) of influenza virus detections this season have been for influenza A. A total of 864 specimen tested positive for influenza this week (862 A and 2 B).
Of the 453 influenza A subtyped, 95.1% were due to Pandemic (H1N1) 2009 and 4.9% to A(H3) virus.
The overall influenza activity level remain high for this time of the year, but has been decreasing compared to the previous weeks.
? As of 15 July, 2009, all provinces and territories reported a total of 10,156 laboratory-confirmed cases of Pandemic (H1N1) 2009 including 1,115 hospitalizations. Among the hospitalized cases, 156 were admitted to ICU. Forty-five deaths have been reported to the Public Health Agency of Canada (PHAC).
? There was a 21% increase in the reported number of hospitalized Pandemic (H1N1) 2009 cases this week. Since July 8, 2009, eight deaths, one in British Columbia, one in Alberta, one in Manitoba, two in Ontario and three in Quebec were reported this week.
Pandemic (H1N1) 2009 virus Surveillance and Epidemiology
As of 15 July, 2009, all provinces and territories have reported a total of 10,156 laboratory-confirmed cases of Pandemic (H1N1) 2009 virus, of which 1,115 H1N1 cases were admitted to hospital.
Cases were distributed similarly between males and females (51.2% for females, 47.4% for males, 1.3% unknown).
One-hundred and fifty-one cases have been identified as First-Nations (139 cases in MB and 12 cases in BC), thirty cases as Metis (29 cases in MB and 1 case in BC) and 390 cases are from Nunavut, an area with a predominant Inuit population.
Overall the median age of First-Nations cases was similar to that of the rest of Canada (19 years vs. 18 years),
However, Inuit cases were significantly younger with a median age of 9 years.
Core data was available for 954 (85.6%) hospitalizations.
The median age of hospitalized cases was 21 years (range <1 to 97 years). 352 (36.9%) hospitalized cases had at least one underlying medical conditions : chronic heart disease (51 cases), diabetes (75 cases), kidney disease (26 cases), immuno-suppression (56 cases), lung disease including asthma (138 cases). Eighteen (81.8%) of the 22 pregnant women affected were hospitalized.
156 (17.9%) of the hospitalized cases were reported to have been admitted to the intensive care unit (ICU). Slightly more females were admitted to ICU
(50.6% for females, 44.2% for males, 5.1% unknown). The median age of cases admitted to ICU was 31 years (range <1 to 82 years). Fifty-four (34.6%) ICU patients had at least one underlying medical conditions. Three women admitted to ICU were pregnant.
As of July 15, 2009, core data was available fo 38 (84.4%) deaths. The median age was 44 (range <1 to 82) and 55.3% were females. Among these deaths, 15 (39.5%) cases had at least on underlying medical conditions and 1 (2.6%) was pregnant.
.....
Paediatric Influenza Hospitalizations and deaths
In week 27, 10 laboratory-confirmed influenza-associated paediatric hospitalizations were reported through the Immunization Monitoring Program Active (IMPACT) network. 60% of this week hospitalizations are due to Pandemic (H1N1) 2009. To date this season, 710 hospitalizations have been
reported; 260 (36.6%) of hospitalizations have been due to Pandemic (H1N1) 2009. The proportion of cases to date by age group are as follows: 13.7% were 0-5 month olds; 25.2% were 6-23 month olds; 22.0% were 2-4 year olds; 19.3% were 5-9 year olds; and 19.9% were 10-16 year olds.
There were four deaths reported so far this season including two deaths due to Pandemic (H1N1) 2009.
Laboratory Surveillance Summary
This week, the proportion of tests that were positive for influenza was 13.4% which is decreasing compared to previous weeks (see table). The majority (81.6%) of influenza virus detections this season have been for influenza A. A total of 864 specimen tested positive for influenza this week (862 A and 2 B).
Of the 453 influenza A subtyped, 95.1% were due to Pandemic (H1N1) 2009 and 4.9% to A(H3) virus.