But Pfizer insisted that those doses be counted toward its existing contract. Covid-19 Vaccines › Answers to Your Vaccine Questions If I live in the U.S., when can I get the vaccine? A growing number of coronavirus vaccines are showing robust protection against becoming sick. The Pfizer and BioNTech vaccine is delivered as a shot in the arm, like other typical vaccines. Will mRNA vaccines change my genes?

Source: New York Times January 22, 2021 23:09 UTC