Prevalence and Durability of SARS-CoV-2 Antibodies Among Unvaccinated US Adults by History of COVID-19
Antitela poseduje 55% onih koji su sumnjali da su bili zaraženi, a nisu testirani, kao i 11% onih koji su mislili da nikada nisu bili zaraženi. Antitela onih koji su bili zaraženi ostaju na istom nivou i nakon 20 meseci kao što su bila neposredno nakon zaražavanja.In this cross-sectional study of unvaccinated US adults, antibodies were detected in 99% of individuals who reported a positive COVID-19 test result, in 55% who believed they had COVID-19 but were never tested, and in 11% who believed they had never had COVID-19 infection. Anti-RBD levels were observed after a positive COVID-19 test result up to 20 months, extending previous 6-month durability data. (...) There was no evidence of association between time after infection and antibody titer (0.8% increase [95% CI, –2.4% to 4.2%] per month, P = .62)