SARS-CoV-2 antibody trajectories after a single COVID-19 vaccination with and without prior infection

Antibody response Herd Immunity
DOI: 10.1038/s41467-022-31495-x Publication Date: 2022-06-29T13:05:16Z
ABSTRACT
Abstract Given high SARS-CoV-2 incidence, coupled with slow and inequitable vaccine roll-out in many settings, there is a need for evidence to underpin optimum deployment, aiming maximise global population immunity. We evaluate whether single vaccination individuals who have already been infected generates similar initial subsequent antibody responses two vaccinations those without prior infection. compared anti-spike IgG after ChAdOx1, BNT162b2, or mRNA-1273 vaccines the COVID-19 Infection Survey UK general population. In 100,849 adults median (50 (IQR: 37–63) years) receiving at least one vaccination, 13,404 (13.3%) had serological/PCR of Prior infection significantly boosted responses, producing higher peak levels and/or longer half-lives dose all three than vaccinations. infection, time above positivity threshold was >1 year first vaccination. Single-dose targeted previously may provide as good protection two-dose among previous
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