12/22/2025
PROGRESSION OF THE 25-26 RESPIRATORY VIRUS SEASON
This map from the CDC represents respiratory illness with fever plus cough or sore throat. This is what the CDC terms influenza-like illness (ILI). This is not necessarily all influenza, and most likely includes respiratory illnesses with symptoms similar to influenza.
Clicking on the link below allows you to follow the progression of the respiratory virus season from weeks 40 through 50. You can select the season of interest in the dropdown menu in the lower left of the map.
https://www.cdc.gov/fluview/surveillance/usmap.html