Weekly influenza reports

July 21, 2024 to August 24, 2024 (weeks 30-34)

At the national level, indicators of influenza activity are decreasing and remain at interseasonal levels.

This is the final FluWatch report for the 2023-2024 season.

Virologic

• In week 34, the percentage of tests positive for influenza was 0.3% and a total of 57 laboratory detections (47 influenza A and 10 influenza B) were reported.

Syndromic

• The percentage of FluWatchers reporting cough and fever was 1.3% in week 34. The percentage of FluWatchers reporting cough and fever remains similar to expected levels for this time of year.

Outbreaks

• From August 27, 2023 to August 24, 2024 (weeks 35 to 34), 1,224 laboratory-confirmed influenza outbreaks have been reported (no laboratory-confirmed influenza outbreaks were reported in week 34).

Severe Outcomes

• From August 27, 2023 to August 24, 2024 (weeks 35 to 34), 4,516 influenza-associated hospitalizations were reported by participating provinces and territories. Adults aged 65 years of age and older accounted for 45% of reported hospitalizations. The highest cumulative hospitalization rates were among adults 65 years of age and older (199/100,000) and children under 5 years of age (139/100,000).

Other Notes

• This is the final FluWatch report of the 2023-2024 season. The next scheduled FluWatch report, the first of the 2024-2025 surveillance season (weeks 35-39) will be published October 4, 2024.
• Weekly reporting of SARS-CoV-2 specific trends can be found on the COVID-19 epidemiology update page.
• Weekly reporting of laboratory detections of influenza, SARS-CoV-2, and other seasonal respiratory viruses will continue via our Respiratory Virus Detections Surveillance System.