Weekly influenza reports
FluWatch summary
March 3 to March 9, 2024 (week 10)
At the national level, most indicators of influenza activity remained similar compared to the previous week. All surveillance indicators are within or below expected levels typical of this time of year.
Virologic
- In week 10, the percentage of tests positive for influenza was 10.7% and a total of 3,134 laboratory detections (1,676 influenza A and 1,458 influenza B) were reported.
Syndromic
- The percentage of visits for influenza-like illness (ILI) was 1.8% in week 10. The percentage of visits for ILI is within expected levels typical of this time of year.
- The percentage of FluWatchers reporting cough and fever was 1.3% in week 10. The percentage of FluWatchers reporting cough and fever remains below expected for this time of year.
Outbreaks
- From August 27, 2023 to March 9, 2024 (weeks 35 to 10), 1,048 laboratory-confirmed influenza outbreaks have been reported (32 laboratory-confirmed influenza outbreaks were reported in week 10).
Severe Outcomes
- From August 27, 2023 to March 9, 2024 (weeks 35 to 10), 3,849 influenza-associated hospitalizations were reported by participating provinces and territories. Adults aged 65 years of age and older accounted for 48% of reported hospitalizations. The highest cumulative hospitalization rates were among adults 65 years of age and older (125/100,000) and children under 5 years of age (78/100,000).
- From October 1, 2023 to March 9, 2024 (weeks 40 to 10), 870 influenza-associated pediatric hospitalizations were reported from a total of 3,389 positive influenza tests across nine sentinel hospital sites.
Other Notes
- Weekly reporting of laboratory detections of influenza, SARS-CoV-2, and other seasonal respiratory viruses will continue via our Respiratory Virus Detections Surveillance System.
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Reports
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