Potential Presymptomatic Transmission of SARS-CoV-2, Zhejiang Province, China, 2020

Abstract

We report a 2-family cluster of persons infected with severe acute respiratory syndrome coronavirus 2 in the city of Zhoushan, Zhejiang Province, China, during January 2020. The infections resulted from contact with an infected but potentially presymptomatic traveler from the city of Wuhan in Hubei Province.

Keywords: 2019 novel coronavirus disease; COVID-19; China; SARS-CoV-2; Zhejiang; asymptomatic; cluster; coronavirus; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses.

Figure

Epidemiologic linkage and timeline of severe acute respiratory syndrome coronavirus 2 infection within 2 households in the city of Zhoushan, Zhejiang Province, China, January 2020, and relationship to a visitor from Wuhan, Hubei Province, China (person W). Persons A and D had dinner with person W on January 6. During January 10–11, person D traveled on business to Guangzhou, Guangdong Province; on January 13, he traveled on business to Shanghai, Shanghai Municipality; and during January 16–18, he traveled on business to Sanya, Hainan Province. Therefore, gaps exist in exposure dates for person D. rRT-PCR, real-time reverse transcription PCR; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.