Viral kinetics of SARS-CoV-2 in asymptomatic carriers and presymptomatic patients

Abstract

From a total of 71 laboratory-confirmed cases, three presymptomatic patients and 10 patients with entirely asymptomatic infections were identified. In two of the three incubation period patients, the viral titer in the presymptomatic period was very high (Ct value 35 within 14 days after diagnosis. Patients who have COVID-19 may already be infectious before there are symptoms, and 14 days of isolation after diagnosis may be sufficient in entirely asymptomatic cases.

Keywords

• COVID-19
• Asymptomatic carrier
• Presymptomatic
• Viral kinetics
• Isolation