Among confirmed cases of influenza worldwide, Type A is more common than Type B. Influenza is a seasonal disease, with case numbers following a similar trend annually. This statistic shows the number of positive influenza cases per week reported globally in 2021, by type.
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WHO. (January 21, 2022). Reported cases of influenza per week in 2021 worldwide, by type [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 21, 2026, from /statistics/1120860/influenza-cases-worldwide-type-week/
WHO. "Reported cases of influenza per week in 2021 worldwide, by type." Chart. January 21, 2022. ÌÇÐÄÆÆ½â°æ. Accessed July 21, 2026. /statistics/1120860/influenza-cases-worldwide-type-week/
WHO. (2022). Reported cases of influenza per week in 2021 worldwide, by type. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 21, 2026. /statistics/1120860/influenza-cases-worldwide-type-week/
WHO. "Reported Cases of Influenza per Week in 2021 Worldwide, by Type." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 21 Jan 2022, /statistics/1120860/influenza-cases-worldwide-type-week/
WHO, Reported cases of influenza per week in 2021 worldwide, by type ÌÇÐÄÆÆ½â°æ, /statistics/1120860/influenza-cases-worldwide-type-week/ (last visited July 21, 2026)
Reported cases of influenza per week in 2021 worldwide, by type [Graph], WHO, January 21, 2022. [Online]. Available: /statistics/1120860/influenza-cases-worldwide-type-week/