Key trends
Weekly summary – October 1, 2026
Current respiratory activity is measured in consideration of recent past respiratory seasons.
- RSV test positivity remains low. Wastewater levels are stable and low.
- SARS-CoV-2 test positivity has increased in recent weeks and is low-to-moderate. Wastewater levels continue to increase in many sites and are at moderate levels. Hospital admissions have increased but remain low.
- The proportions of emergency department and primary care visits for respiratory illness are low but have increased over the past several weeks.
- In Canada, as of September 4, 2026, indicators of influenza activity were stable at inter-seasonal levels in the most recent reporting week. The Canadian Respiratory Virus Surveillance Report is scheduled to be updated on October 2, 2026.
In the USA, seasonal influenza activity is low.
In the European Union/European Economic Area (EU/EEA), influenza activity is at baseline levels overall, with only a few countries reporting detections in primary or secondary care.
- In Canada, as of September 4, 2026, indicators of RSV activity were stable at inter-seasonal levels in the most recent reporting week. The Canadian Respiratory Virus Surveillance Report is scheduled to be updated on October 2, 2026.
In the USA, RSV activity is very low in most areas of the country.
In the EU/EEA, RSV activity is low and at expected inter-seasonal levels.
- In Canada, as of September 4, 2026, indicators of COVID-19 activity were low but showing signs of increase. The Canadian Respiratory Virus Surveillance Report is scheduled to be updated on October 2, 2026.
In the USA, COVID-19 activity remains elevated but is declining nationally. COVID-19 hospitalizations remain low.
In the EU/EEA, SARS-CoV-2 activity is increasing slightly in primary care and has slightly decreased in secondary care in comparison to last week.
