摘要
Background On December 31,2019,the World Health Organization(WHO)was alerted to several cases of pneumonia of unknown etiology in Wuhan,the capital city of Hubei Province in Central China.A novel coronavirus(2019-nCoV)was identified as the causative virus by Chinese authorities on January 7,2020(1),and China CDC has named the associated disease as novel coronavirus-infected pneumonia(NCIP)(2–3).As of January 23,2020,the National Health Commission(NHC)of China had confirmed a total of 830 cases of NCIP in China's Mainland,including 177 in critical condition,25 fatalities,and 34 recoveries.In Wuhan the origin of the NCIP outbreak,495 cases including 24 fatalities have been confirmed.In addition to the cases in China's Mainland,two cases have been detected in Hong Kong Special Administrative Region,China,two in Macao Special Administrative Region,China,one in Taiwan.
作者简介
Corresponding author:Xiao-hua Zhou,azhou@math.pku.edu.cn.
