US expands Pfizer COVID boosters, opens extra dose to age 16
U.S. health authorities again expanded the nation?s booster campaign Thursday, opening extra doses of Pfizer?s COVID-19 vaccine to several million 16- and 17-year-olds.
U.S. health authorities again expanded the nation?s booster campaign Thursday, opening extra doses of Pfizer?s COVID-19 vaccine to several million 16- and 17-year-olds.