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[Preprint]. 2021 Feb 22:2021.02.09.21251319. [Version 2] doi: 10.1101/2021.02.09.21251319

SARS-CoV-2 seropositivity after infection and antibody response to mRNA-based vaccination

Emily J Ciccone, Deanna R Zhu, Rawan Ajeen, Evans K Lodge, Bonnie E Shook-Sa, Ross M Boyce, Allison E Aiello
PMCID: PMC7899463  PMID: 33619498

Abstract

The effect of SARS-CoV-2 infection on response to mRNA-based SARS-CoV-2 vaccines is not well-described. We assessed longitudinal SARS-CoV-2-specific antibody responses pre- and post-vaccination among individuals with and without prior infection. The antibody response to the first vaccine dose was almost two-fold higher in individuals who were seropositive before vaccination compared to those who were seronegative, suggesting that prior infection primes the immune response to the first dose of mRNA-based vaccine.

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