1. Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
2. National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People’s Republic of China
3. Beijing Pinggu District Center for Disease Prevention and Control, Beijing, People’s Republic of China
4. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
5. Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, People’s Republic of China