Ontario Respiratory Virus Tool
The Ontario Respiratory Virus Tool provides comprehensive epidemiological information on respiratory virus activity in Ontario, including COVID-19, influenza, RSV, and other respiratory viruses. Explore respiratory virus data including case trends, outcomes (hospital bed occupancy, ICU bed occupancy, and deaths), laboratory testing, and outbreaks.
Key findings for Jan. 4 – Jan. 10, 2026 (week 1)
COVID-19
- Percent positivity was low (5.8%), and overall activity was higher than the previous week.
- Highest percent positivity in those <1 years (9.3%) and 65 years and older (6.5%).
Influenza
- Percent positivity was moderate (13.9%), and overall activity was lower than the previous week.
- Influenza A percent positivity declined in all age groups but remains highest in children 5-11 years at 23.7% and 1-4 years at 24.7%.
- H3N2 was more common than H1N1 this week and season to date. See Influenza Strain Details tab.
- Antiviral-resistant isolates identified in Ontario are summarized on the Influenza Strain Details tab.
RSV
- Percent positivity was low (4.8%), and overall activity was higher than the previous week.
- Highest percent positivity in children under 5: 26.4% (<1 year) and 19.5% (1–4 years).
How to Use The Tool
The tool is best viewed on desktop or tablet.
To learn how to navigate the tool, see our User Guide.
To see information on source data, classifications, citations, definitions and more, see our Technical Notes.
The tool is updated Fridays, with data up to the previous Saturday. The tool will be updated the next business day following a holiday.
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