| Popis: |
Systemic vaccination with the BNT162b2 mRNA vaccine stimulates the humoral response.Our study aimed to compare the intensity of the humoral immune response, measured bySARS-CoV-2 IgG, SARS-CoV-2 IgM, and S-RBD neutralizing IgG antibody levels, afterCOVID-19 vaccination versus after SARS-CoV-2 infection. We analyzed 1060 people in thefollowing groups: convalescents, healthy vaccinated individuals, individuals vaccinated withComirnaty, AstraZeneca, Moderna, or Johnson & Johnson, and vaccinated SARS-CoV-2convalescents. The concentrations of SARS-CoV-2 IgG, SARS-CoV-2 IgM, and S-RBDneutralizing antibodies were estimated in the oncology hospital laboratory bychemiluminescent immunoassay (CLIA; MAGLUMI). Results: (1) We observed a rise inantibody response in both SARS-CoV-2 convalescent and COVID-19-vaccinated groups. (2)The levels of all antibody concentrations in vaccinated COVID-19 convalescents weresignificantly higher. (3) We differentiated asymptomatic SARS-CoV-2 convalescents from thecontrol group. Our analysis suggests that monitoring SARS-CoV-2 IgG antibodyconcentrations is essential as an indicator of asymptomatic COVID-19 and as a measure of theeffectiveness of the humoral response in convalescents and vaccinated people. Considering thetime-limited effects of post-SARS-CoV-2 infection recovery or vaccination and thephysiological half-life, among other factors, we suggest monitoring the IgG antibody level as acriterion for the next vaccination. |
