US urges COVID boosters starting at age 12 to fight omicron
A doctor loads a dose of Pfizer COVID-19 vaccine into a syringe Dec. 2, 2021, at a mobile vaccination clinic in Worcester, Mass. AP The U.S. is urging that everyone 12 and older ge…
A doctor loads a dose of Pfizer COVID-19 vaccine into a syringe Dec. 2, 2021, at a mobile vaccination clinic in Worcester, Mass. AP The U.S. is urging that everyone 12 and older ge…