•Monthly Cumulative Percent of Persons Who Received 1+ Influenza Vaccination Doses and Comparison Between 2025–26 and Three Previous Seasons, by Jurisdiction, United States.

• Influenza (flu) vaccination coverage for children and adults is assessed through U.S. jurisdictions’ Immunization Information Systems Resources (IIS) data, submitted from jurisdictions to CDC monthly, in aggregate, by age group (https://www.cdc.gov/iis/about/).

• Monthly estimates shown are cumulative, reflecting all persons vaccinated from July 1 through a given month of that flu season.*,† Cumulative estimates include any historical data reported since the previous submission. National estimates are not presented since not all U.S. jurisdictions are currently reporting their IIS data to CDC. Jurisdictions reporting data to CDC include U.S. states, some localities, and territories.

Tags: iis, nis-acm, vsd, iqvia, flu vaccination

Last updated: 2025-12-17 14:45:38+00:00