https://www.forbes.com/health/body/flu-statistics/Flu Statistics by Year
According to the CDC, the estimated number of annual flu cases in the U.S. each year since 2016 >is as follows:
29 million cases in 2016-2017
41 million cases in 2017-2018
29 million cases in 2018-2019
36 million cases in 2019-2020
9 million cases in 2021-2022
Estimates aren’t available for the 2020-2021 flu season due to minimal influenza activity.