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Asymptomatic and Presymptomatic Infectors: Hidden Sources of COVID-19 Disease

Published time: 09 April 2020

Authors: Guanjian Li,  Weiran Li,  Xiaojin He,  Yunxia Cao

Keywords: Coronavirus, SARS-COV-2, COVID-19


With interest, we read the study by Sarah et al. who reported the first mildly Ill, non- hospitalized case of COVID-19 in the United States[1]. The authors conducted rigorous public health surveys, contact tracking and serial SARSCoV-2 testing. In their research, despite specimens testing positive 18 days after diagnosis, no SARS-CoV-2 transmission occurred among 10 high-risk contacts of this patient, including 1 intimate contact. This study provided important insights for the spread of COVID-19. However, they promoted the possibility that mild cases can be released from isolation based on symptom resolution.

Asymptomatic and Presymptomatic Infectors; Hidden Sources of COVID-19 Disease



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