A Weekly Influenza Activity Report*
National Flu Report
A weekly influenza surveillance report prepared by the influenza division weekly influenza activity estimates reported by state and territorial epidemiologists.*
Reported Activity for Week Ending Apr 24, 2021
Reported Activity for Week Ending Apr 17, 2021
Reported Activity for Week Ending Apr 10, 2021
Reported Activity for Week Ending Apr 3, 2021
*This map indicates geographic spread and does not measure the severity of the influenza activity.
Source: US Centers for Disease Control and Prevention.
Influenza-Like Illness (ILI) Activity Level Indicator Determined by Data Reported to ILINet