id author title date pages extension mime words sentences flesch summary cache txt cord-270909-wb7mwklo Cheng, Vincent C.C. Absence of nosocomial transmission of coronavirus disease 2019 (COVID-19) due to SARS-CoV-2 in the pre-pandemic phase in Hong Kong 2020-05-24 .txt text/plain 2262 111 46 BACKGROUND: To describe the infection control strategy to achieve zero nosocomial transmission of symptomatic coronavirus disease (COVID-19) due to SARS-CoV-2 during the pre-pandemic phase (the first 72 days after announcement of pneumonia cases in Wuhan) in Hong Kong. Pandemic infection of a coronavirus disease 2019 (COVID-19) due to severe acute respiratory syndrome-associated coronavirus-2 (SARS-CoV-2) was declared by World Health Organization (WHO) on 11 March 2020, which is 72 days after announcement of a cluster of patients with community acquired pneumonia in Wuhan, Hubei Province by National Health Commission of the People's Republic of China (NHCPRC), on 31 December 2019 (day 1) [1] . Up to 11 March 2020 (day 72 after the official announcement of a cluster of pneumonia of unknown etiology in Wuhan, Hubei Province, a total of 130 cases of SARS-CoV-2 infection were confirmed in Hong Kong, while the first 42 patients were reported previously [9] . ./cache/cord-270909-wb7mwklo.txt ./txt/cord-270909-wb7mwklo.txt