Charles Muro,age 13, celebrates being inoculated by Nurse Karen Pagliaro at Hartford Healthcare's mass vaccination center at the Connecticut Convention Center in Hartford, Connecticut on May 13, 2021. - Six Children were vaccinated at the site and joined other children in the United States as kids ages 12-15 are now able to be vaccinated with the Pfizer-BioNTech?Covid-19 vaccine, joining the growing population of the US that can be vaccinated against the Covid-19 virus. (Photo by Joseph Prezioso / AFP)