FDA Approves Fourth COVID Shot. Fifth Shot Considered.

On Mar. 29, 2022, the U.S. Food and Drug Administration (FDA) approved a second booster dose (a fourth shot) of the Pfizer/BioNTech messenger RNA (mRNA) biologic BNT162b2 (“Comirnaty”) and Moderna/NIAID mRNA-1273 (“Spikevax”) for people 50 years of age and older, as well as younger individuals who are immunocompromised. The second booster would be given no sooner than four months after the previous COVID vaccination.

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-Kent