Durability of Immune Responses After Boosting in Ad26.COV2.S-Primed Healthcare Workers

Clin Infect Dis. 2023 Feb 8;76(3):e533-e536. doi: 10.1093/cid/ciac495.

Abstract

The emergence of SARS-CoV-2 variants raised questions regarding the durability of immune responses after homologous or heterologous boosters after Ad26.COV2.S-priming. We found that SARS-CoV-2-specific binding antibodies, neutralizing antibodies, and T cells are detectable 5 months after boosting, although waning of antibodies and limited cross-reactivity with Omicron BA.1 was observed.

Keywords: Ad26.COV2.S; SARS-CoV-2; waning immunity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ad26COVS1*
  • Antibodies, Neutralizing
  • Antibodies, Viral
  • COVID-19*
  • Health Personnel
  • Humans
  • Immunity
  • SARS-CoV-2

Substances

  • Ad26COVS1
  • Antibodies, Neutralizing
  • Antibodies, Viral

Supplementary concepts

  • SARS-CoV-2 variants