FDA amends COVID vaccine EUAs, considers animal studies to accelerate updates

Monovalent messenger ribonucleic acid (mRNA) COVID vaccines from Moderna and Pfizer/BioNTech are no longer authorized for use in the US, the US Food and Drug Administration announced 18 April. Instead, the emergency use authorizations (EUAs) for their bivalent vaccines have been amended so they can be updated more easily in the future.