As concerns grow about the impact of the new Omicron variant, Pfizer announced on Tuesday it was seeking US authorization for booster shots for adolescents aged 16 and 17.
So far, FDA has approved emergency use authorizations (EUAs) for boosters only for those aged 18 and over, six months after the primary series of the Pfizer or Moderna Covid vaccine, or two months after the Johnson & Johnson booster.