What Strain Flu Vaccine 2024
What Strain Flu Vaccine 2024. February 29, 2024 / 2:41 pm est / cbs news. Trivalent flu vaccines are formulated to protect against three flu. For 10 years, americans have had access to flu shots that protect against four strains of the virus: Influenza virus strains for a trivalent vaccine composition for use in the […]