95% protection from COVID-19. 1 However, patient age is known to contribute to the risk of COVID-19 inc idence and severity.2 We examined the relationship between age and neutralizing antibody titers against the early SARS-CoV-2 USA-WA1/2020 strain and the P.1 variant of concern after 2 doses of the BNT162b2 vaccine.
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Bates et al. (2021) studied this question.
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