1. State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Beijing, China. ,
2. State Key Laboratory of Infectious Disease Prevention and Control, National Institute for viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Beijing, China
3. Ulanqab Center for Disease Control and Prevention, 012000, Jining (Inner Mongolia), China.
4. Chinese Center for Disease Control and Prevention, 102206, Beijing, China. ,