As vaccine-induced security against SARS-CoV-2 waned and discovery infections increased following the major series, in Fall 2021 the meals and Medication Administration (FDA) authorized third (booster) dosages of 2 messenger RNA (mRNA) vaccines, BNT162b2 (Comirnaty, Pfizer [Manhattan, New York]/BioNTech [Mainz, Germany]) and mRNA-1273 (Spikevax, Moderna, Cambridge, Massachusetts)

As vaccine-induced security against SARS-CoV-2 waned and discovery infections increased following the major series, in Fall 2021 the meals and…