摘要
In December 2019,a number of patients with pneumonia of unknown etiology(PUE)were reported in Wuhan,Hubei Province(1).The coronavirus disease 2019(COVID-19),caused by a virus also known as severe acute respiratory syndrome coronavirus-2(SARS-CoV-2),was identified by China in January 2020.On January 30,2020,the World Health Organization(WHO)declared coronavirus a public health emergency of international concern(PHEIC).
