Weekly influenza reports

March 22 to 28, 2020 (week 13)

• The percentage of tests positive for influenza fell below 5% this week. This suggests that Canada is nearing the end of the 2019-2020 influenza season at the national level.
• All indicators of influenza activity decreased compared to the previous week.
• Laboratory detections and syndromic indicators may be influenced by the COVID-19 pandemic. These data should be interpreted with caution.
• The 2019-2020 Seasonal Influenza Immunization Coverage Survey showed that coverage was low among adults aged 18-64 years (34%) and highest among seniors aged 65 years and older (70%).
• The highest cumulative hospitalization rates are among children under 5 years of age and adults 65 years of age and older. Hospitalizations among adults are predominantly due to influenza A, while those among children are due to a mix of influenza A and B.

• Weekly reports 2019-2020 season
• Weekly reports 2018-2019 season
• Weekly reports 2017-2018 season
• Weekly reports 2016-2017 season
• Weekly reports 2015-2016 season
• Weekly reports 2014-2015 season
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