COVID-19 — South Korea
Research letter:
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a new strain of betacoronavirus that causes coronavirus disease (COVID-19), quickly spread worldwide; the World Health Organization declared COVID-19 a pandemic on [11 Mar 2020] (1). Recent studies showed that a substantial number of asymptomatic COVID-19 patients contributed to the rapid dissemination of SARS-CoV-2 (2). In hospitalized COVID-19 patients, neutralizing antibody production was shown to increase after
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