SARS-CoV-2 antibody trajectories after a single COVID-19 vaccination with and without prior infectionMore about Open Access at the Crick
Authors listJia Wei Philippa Matthews Nicole Stoesser Ian Diamond Ruth Studley Emma Rourke Duncan Cook John I Bell John N Newton Jeremy Farrar Alison Howarth Brian D Marsden Sarah Hoosdally E Yvonne Jones David I Stuart Derrick W Crook Tim EA Peto A Sarah Walker David W Eyre Koen B Pouwels COVID-19 Infection Survey team
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 vaccine deployment, aiming to maximise global population immunity. We evaluate whether a single vaccination in individuals who have already been infected with SARS-CoV-2 generates similar initial and subsequent antibody responses to two vaccinations in those without prior infection. We compared anti-spike IgG antibody responses after a single vaccination with ChAdOx1, BNT162b2, or mRNA-1273 SARS-CoV-2 vaccines in the COVID-19 Infection Survey in the 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 evidence of prior infection. Prior infection significantly boosted antibody responses, producing higher peak levels and/or longer half-lives after one dose of all three vaccines than those without prior infection receiving one or two vaccinations. In those with prior infection, the median time above the positivity threshold was >1 year after the first vaccination. Single-dose vaccination targeted to those previously infected may provide at least as good protection to two-dose vaccination among those without previous infection.
Journal Nature Communications
Issue number 1