1. School of Public Health, Nanjing Medical University, Nanjing, China
2. Department of Acute Infectious Diseases Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
3. National Health Commission Key Laboratory of Enteric Pathogenic Microbiology, Nanjing, China
4. General office, Jiangsu Institute of Parasitic Diseases, WuXi, China
5. Department of Acute infectious Diseases Control and Prevention, Lianyungang Municipal Center for Disease Control and Prevention, Lianyungang, China
6. Jiangsu Province Engineering Research Center of Health Emergency, Nanjing, China
7. China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China