A Weekly Influenza Activity Report*
National Flu Activity Map
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 September 11, 2021
Reported Activity for Week Ending September 4, 2021
Reported Activity for Week Ending August 28, 2021
Reported Activity for Week Ending August 21, 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