Pfizer, the maker of an mRNA COVID-19 vaccine, said it studied a lower dose of its shot in 2,268 kindergartners and elementary school-aged kids.
COVID-19 vaccine effective in children ages 5 to 11, Pfizer says
Pfizer, the maker of an mRNA COVID-19 vaccine, said it studied a lower dose of its shot in 2,268 kindergartners and elementary school-aged kids.