1 National Insitute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Key Laboratory of Parasite and Vecotr Biology,MOH;WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis,Shanghai 200025,China;2 Jiangsu Institute of Schistosomiasis,Wuxi 214064,China;3 Anhui Institute of Schistosomiasis,Hefei 230061,China; 4 Hubei Institute of Schistosomiasis,Wuhan 430070,China;5 Chongqing Center of Disease Control and Prevention,Chongqing 400042,China;6 Shandong Institute of Parasitic Diseases,Jining 272100,China;7 Bureau of Disease Control and Prevention,MOH,Beijing 100040,China