US Authorises Pfizer Vaccine For 12-15 Year Olds US Authorises Pfizer Vaccine For 12-15 Year Olds Acting FDA commissioner Janet Woodcock described the move as a "significant step in the fight against the Covid-19 pandemic." The FDA previously authorised the Pfizer vaccine to individuals aged 16 and older. Washington: The United States on Monday authorized the Pfizer-BioNTech Covid-19 vaccine for children aged 12 to 15 years old, while the devastating outbreak in India raged on. The US Food and Drug Administration previously had granted an emergency use authorization for the jab to individuals aged 16 and older. "This is a promising development in our fight against the virus," said President Joe Biden.