Nearly all states require some form of parental or guardian consent for vaccine providers to administer Covid-19 shots to people ages 12 to 15, a CNN analysis finds. But there are a few exceptions. A teenager is shown being inoculated with Pfizer's vaccine against coronavirus disease (COVID-19) after Georgia authorized the vaccine for ages over 12 years, at Dekalb Pediatric Center in Decatur, Georgia, U.S. May 11, 2021. Mandatory Credit: Chris Aluka Berry/Reuters