Weekly influenza reports

FluWatch Summary

November 24 to 30, 2019 (week 48)

  • The flu season started in week 47 at the national level, and activity continues to increase as expected for this time of year.
  • Influenza A(H3N2) continues to be the most common influenza virus circulating in Canada for the season to date; however, approximately 40% of influenza A detections were A(H1N1) in week 48.
  • Although the majority of laboratory detections have been influenza A to date this season, the proportion of detections of influenza B (30%) is higher than average for this time of year.
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