1. State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
2. Infectious Disease Control and Prevention Department, Chongqing Municipal Center for Disease Control and Prevention, Chongqing, China
3. Infectious Disease Control and Prevention Department, Jingzhou Center for Disease Control and Prevention, Jingzhou City, Hubei Province, China
4. Key Laboratory of Surveillance and Early-warning on Infectious Disease, Division of Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China