What to know
CDC estimates the impact of annual flu vaccination in the United States by calculating burden prevented by vaccination. CDC produces these estimates using a model that calculates the numbers of flu illnesses, medical visits, hospitalizations, and deaths prevented by vaccination using season-specific data on burden of disease, vaccine coverage and vaccine effectiveness (VE). Variations in these three factors can impact estimates of both the burden of disease and the burden prevented by vaccination from season to season. CDC uses the estimates of the burden of flu in the population and the impact of flu vaccination to inform policy and communications related to flu.
Past seasons' burden prevented by flu vaccination
To open the dashboard in full-screen mode, click the double arrow icon in the bottom right corner.
The dashboard above is an interactive tool to access and visualize information about the estimated flu disease burden prevented by vaccination from past seasons, beginning with the 2010-2011 flu season. Pages include data tables for the vaccine prevented flu disease burden estimates for past seasons that can be downloaded using links on each page. There are also pages that include visuals designed to more easily compare the vaccine prevented flu disease burden across seasons, outcomes and between age groups. Information on How CDC Estimates the Burden of Flu Prevented by Vaccination and additional information about the 2024-2025 flu season are also available.