Flu Vaccines Work

Flu Vaccination

How Well Flu Vaccines Work

While flu vaccine effectiveness can vary from season to season, every year flu vaccines provide important protections against flu.

vaccine virus selection meeting

Why CDC Estimates Vaccine Effectiveness (VE)

CDC calculates flu vaccine effectiveness (VE) each season for multiple reasons.

CDC Seasonal Flu Vaccine Effectiveness Studies
CDC Seasonal Flu Vaccine Effectiveness Studies

CDC conducts studies to measure the benefits of seasonal flu vaccination each flu season to help determine how well flu vaccines are working.

Flu Burden Averted from Vaccination
woman getting vaccine

CDC estimates the burden of flu and the impact of annual flu vaccination in the U.S using a model that estimates the numbers of flu illnesses, medical visits and hospitalization prevented by vaccination.

Flu Vaccine Finder
Flu Finder
Find the flu shot near you.