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 March 11, 2023
Reported Activity for Week Ending March 4, 2023
Reported Activity for Week Ending February 25, 2023
Reported Activity for Week Ending February 18, 2023
*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