1. Department of Acute Infectious Diseases Suzhou Center for Disease Control and Prevention Suzhou China
2. Section of Epidemiology Department of Acute Infectious Diseases Jiangsu Provincial Center for Disease Control and Prevention Nanjing China
3. Section of Virology Department of Acute Infectious Diseases Jiangsu Provincial Center for Disease Control and Prevention Nanjing China
4. National Health Commission Key laboratory of Enteric Pathogenic Microbiology Nanjing China