Flu Vis 2024 Cdc. Find out more information about trivalent flu vaccines and their effectiveness. The exact efficacy varies by year, but data from the centers for disease control and prevention (cdc) show that for all flu vaccines (meaning nasal and the shot) the 2023.
Flu is a contagious disease that spreads around the united states every year, usually between october and may. Find out how to get your flu vaccine for free or at low cost and.