Number of influenza cases during the 2021-2022 flu season in the U.S. by age group
The CDC estimated that those aged 18 to 49 accounted for the highest number of symptomatic cases of influenza during the 2021 to 2022 flu season. This statistic shows the estimated number of symptomatic influenza cases in the U.S. during the 2021-2022 influenza season, by age group.