Open access
Sep 2026
Two Versus One COVID-19 Vaccine Dose After Prior SARS-CoV-2 Infection: A Nationwide Retrospective Cohort Study
Abstract Background Immune protection against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) varies by prior infection and vaccination history. This study evaluated whether 2 coronavirus disease (COVID-19) vaccine doses after prior infection provide additional protection compared with a single dose. Metho...
H. Chemaitelly, H. Ayoub, Peter V. Coyle et al.
· Open Forum Infectious Diseas... · 0 citations