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.