Prevalence of salivary anti‐SARS‐CoV‐2 IgG antibodies in vaccinated children.

Keywords: antibodies; mucosal immunology; vaccination; viral EN antibodies mucosal immunology vaccination viral 384 387 4 06/19/23 20230701 NES 230701 Abbreviations 95% CI 95% confidence intervals BAU/mL binding antibody units per mL GMC geometric mean concentrations Vaccination against COVID-19 has mitigated the impact of SARS-CoV-2 infection, decreasing the probability of progression to severe disease and death in vaccinated people. In this study, we observed a high salivary antibody prevalence (81%), detecting antibodies even in children whose last contact with SARS-CoV-2 antigens had been 270 days before sample collection. Antibody concentrations in binding antibody units (BAU) per mL (BAU/mL) were obtained interpolating the OD 450 nm values of samples into a calibration curve constructed with the provided standard (400 BAU/mL). [Extracted from the article]