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. 2020 Aug;26(8):1924-1926.
doi: 10.3201/eid2608.201142. Epub 2020 May 26.

Secondary Transmission of Coronavirus Disease from Presymptomatic Persons, China

Weiwei Zhang, Weibin Cheng, Lei Luo, Yu Ma, Conghui Xu, Pengzhe Qin, Zhoubin Zhang

Secondary Transmission of Coronavirus Disease from Presymptomatic Persons, China

Weiwei Zhang et al. Emerg Infect Dis. 2020 Aug.

Abstract

We explored the secondary attack rate in different types of contact with persons presymptomatic for coronavirus disease (COVID-19). Close contacts who lived with or had frequent contact with an index case-patient had a higher risk for COVID-19. Our findings provide population-based evidence for transmission from persons with presymptomatic COVID-19 infections.

Keywords: 2019 novel coronavirus disease; COVID-19; China; SARS; SARS-CoV-2; coronavirus disease; coronavirus secondary transmission; presymptomatic; respiratory infections; secondary attack rate; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.

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