Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Clinical Research Institute Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Department of Infectious Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China;
Hepatitis E virus(HEV); Seroprevalence; Genotyping; Epidemiology; Surveillance;