Elapsed time since BNT162b2 vaccine and risk of SARS-CoV-2 infection in a large cohort

Abstract

In this large population study of patients tested for SARS-CoV-2 by RT-PCR following two doses of mRNA BNT162b2 vaccine, we observe a significant increase of the risk of infection in individuals who received their last vaccine dose since at least 146 days ago, particularly among patients older than 60.