US advisers endorse Pfizer COVID boosters for younger teens
FILE - A doctor loads a dose of Pfizer COVID-19 vaccine into a syringe, Thursday, Dec. 2, 2021, at a mobile vaccination clinic in Worcester, Mass. In January 2022, an influential g…
FILE - A doctor loads a dose of Pfizer COVID-19 vaccine into a syringe, Thursday, Dec. 2, 2021, at a mobile vaccination clinic in Worcester, Mass. In January 2022, an influential g…