1. Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.
2. Key Laboratory of Public Health Safety (Fudan University), Ministry of Education, Shanghai, China.
3. Xinjiang Ili Center for Disease Control and Prevention, Xinjiang, China.
4. Shanghai Institute of Infectious Disease and Biosecurity, School of Public Health, Fudan University, Shanghai, China.
5. Yiwu Research Institute, Fudan University, Yiwu, China.