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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 January 25, 2025
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Reported Activity for Week Ending January 18, 2025
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Reported Activity for Week Ending January 11, 2025
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Reported Activity for Week Ending January 4, 2025
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*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