- cafead   Apr 18, 2023 at 10:52: PM
via 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.
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