Flu activity in the U.S.

About 75% of states and D.C. were classified as having very high or high influenza activity levels during the week ending on Jan. 18, 2025.
Minimal Low Moderate High Very high

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Data not available for Vermont and Guam. Activity levels are a on a scale from 1 (minimal) to 13 (very high) and represent the prevalence of outpatient visits due to influenza like illnesses.
Map: Nicki Camberg/Hearst TVSource: CDC