Xiaoman Wei1,2, Jie Cui3. 1. CAS Key Laboratory of Special Pathogens and Biosafety, Center for Emerging Infectious Diseases, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China. 2. University of Chinese Academy of Sciences, Beijing, 100049, China. 3. CAS Key Laboratory of Special Pathogens and Biosafety, Center for Emerging Infectious Diseases, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China. jiecui@wh.iov.cn.