Mucosal antibody responses to SARS-CoV-2 booster vaccination and breakthrough infection

mBio. 2023 Dec 19;14(6):e0228023. doi: 10.1128/mbio.02280-23. Epub 2023 Dec 1.

Abstract

Antibodies on mucosal surfaces of the upper respiratory tract have been shown to be important for protection from infection with SARS-CoV-2. Here we investigate the induction of serum IgG, saliva IgG, and saliva sIgA after COVID-19 mRNA booster vaccination or breakthrough infections.

Keywords: SARS-CoV-2; booster vaccination; breakthrough infection; mRNA vaccine; sIgA; saliva; spike.

MeSH terms

  • Adult
  • Antibodies, Viral* / blood
  • Antibodies, Viral* / immunology
  • Antibody Formation / immunology
  • Breakthrough Infections
  • COVID-19 Vaccines* / administration & dosage
  • COVID-19 Vaccines* / immunology
  • COVID-19* / immunology
  • COVID-19* / prevention & control
  • Female
  • Humans
  • Immunity, Mucosal*
  • Immunization, Secondary*
  • Immunoglobulin A, Secretory / immunology
  • Immunoglobulin G* / blood
  • Immunoglobulin G* / immunology
  • Male
  • Middle Aged
  • SARS-CoV-2* / immunology
  • Saliva* / immunology
  • Vaccination

Substances

  • Antibodies, Viral
  • COVID-19 Vaccines
  • Immunoglobulin G
  • Immunoglobulin A, Secretory

Supplementary concepts

  • COVID-19 breakthrough infections