Estimated Influenza Illnesses, Medical Visits, and Hospitalizations Prevented by Vaccination
CDC estimates the burden of influenza (flu) and the impact of annual flu vaccination in the United States. CDC produces these estimates using a model that estimates the numbers of flu illnesses, medical visits and hospitalization prevented by vaccination using season-specific data on burden of disease, vaccine coverage and vaccine effectiveness (VE). Variations in these three factors can impact 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.
CDC estimates the numbers of flu illnesses, medical visits and hospitalization prevented by vaccination using season-specific data on burden of disease, vaccine coverage and vaccine effectiveness (VE).
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 seasonal flu.
At the end of each flu season, CDC estimates the burden of flu prevented by vaccination. Past reports on the burden of flu prevented by flu vaccination can be found online.
