Weekly influenza reports

FluWatch Summary

January 5 to 11, 2020 (week 02)

  • Influenza activity decreased across multiple indicators this week. This suggests that Canada may have reached peak influenza activity at the national level. Elevated activity is expected to continue in the coming weeks.
  • Influenza A(H3N2), A(H1N1) and B continue to co-circulate.
  • Influenza A remains the predominant circulating type and influenza B continues to circulate at higher levels than usual.
  • A(H1N1) and A(H3N2) are circulating in almost equal proportions. For the season to date, there is a slight majority (53%) of A(H1N1), due to an increase in detections in recent weeks.
  • The highest cumulative hospitalization rates are among children under 5 years of age and adults 65 years of age and older.
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