AdvertisementCOVID Vaccines In Teens And Myocarditis: What You Need To KnowUpdated June 23, 2021Joanne SilbernerfacebookEmailA teen gets a dose of Pfizer's COVID-19 vaccine last month at Holtz Children's Hospital in Miami. Nearly 7 million U.S. teens and preteens (ages 12 through 17) have received at least one dose of a COVID-19 vaccine so far, the CDC says. (Bloomberg via Getty Images)This article was originally published on June 17, 2021.