Key trends
Weekly summary – April 2, 2026
Current respiratory activity is measured in consideration of recent past respiratory seasons.
- The proportions of emergency department and primary care visits for respiratory illness remain at moderate levels.
- In Canada, indicators of influenza activity were either stable or decreasing in the most recent reporting week. Influenza B accounted for 80% of influenza detections. The majority of influenza B laboratory detections have occurred in individuals aged 5-19 and 20-44 years.
In the USA, seasonal influenza continues to decrease in most areas of the country. Influenza A activity continues to decrease across all regions while trends in influenza B activity vary by region.
In the European Union/European Economic Area (EU/EEA), influenza circulation and hospitalisations continue to decrease across all age groups.
- In Canada, indicators of RSV activity were decreasing in the most recent reporting week.
In the USA, RSV activity started later than expected in most regions, though illness is not more severe compared with recent seasons. This unusual timing means that higher levels of RSV activity may continue into April in many regions. Emergency department visits and hospitalisations for RSV are highest among infants and children less than 4 years old.
In the EU/EEA, RSV activity and hospitalisations remain elevated, with children under five years accounting for most admissions.
- In Canada, indicators of COVID-19 activity were decreasing in the most recent reporting week. Indicators are at or near the lowest levels recorded this season.
In the USA, COVID-19 activity is low in most areas of the country.
In the EU/EEA, SARS-CoV-2 circulation remains low in all age groups, with few hospitalisations.
