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abstractpubmed· Abstract 2020· item PMID:32579877

Antibody Responses to SARS-CoV-2 at 8 Weeks Postinfection in Asymptomatic Patients. We compared levels of severe acute respiratory syndrome coronavirus 2 neutralizing antibodies in recovery plasma from 7 completely asymptomatic coronavirus disease patients with those in symptomatic patients in South Korea. We found that serologic diagnostic testing was positive for 71% (5/7) of completely asymptomatic patients, but neutralizing antibody response occurred in all 7 patients.