Lower probability and shorter duration of infections after COVID-19 vaccine correlate with anti-SARS-CoV-2 circulating IgGs.
prospective_cohort · Level II
Where this comes from
- Record sourced from PubMed, PMID 35100309.
- Also identified by DOI 10.1371/journal.pone.0263014 and PMC identifier 8803178.
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Abstract
The correlation between immune responses and protection from SARS-CoV-2 infections and its duration remains unclear. We performed a sanitary surveillance at the European Institute of Oncology (IEO) in Milan over a 17 months period. Pre-vaccination, in 1,493 participants, we scored 266 infections (17.8%) and 8 possible reinfections (3%). Post-vaccination, we identified 30 infections in 2,029 vaccinated individuals (1.5%). We report that the probability of infection post-vaccination is i) significantly lower compared to natural infection, ii) associated with a significantly shorter median duration of infection than that of first infection and reinfection, iii) anticorrelated with circulating antibody levels.
Medical subject headings
- Antibodies, Anti-Idiotypic
- COVID-19
- COVID-19 Vaccines
- Immunoglobulin G