Influenza Hospitalization Surveillance Network (FluSurv-NET)
Flu hospitalizations are increasing; CDC is presenting flu hospitalization rates for the first time this season. Flu hospitalization rates during the 2021-2022 season are higher than they were at the same time last season, but lower than at the same time during the previous four regular flu seasons. These data are collected through FluSurv-NET in counties covering about 9% of the U.S. population.