Monitoring the Transmission of Schistosoma japonicum in Potential Risk Regions of China, 2008 – 2012

Hui Dang, Jing Xu, Shi-Zhu Li, Zhi-Guo Cao, Yi-Xin Huang, Cheng-Guo Wu, Zu-Wu Tu and Xiao-Nong Zhou
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Hui Dang: National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Laboratory of Parasite and Vector Biology, Ministry of Public Health, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai 200025, China
Jing Xu: National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Laboratory of Parasite and Vector Biology, Ministry of Public Health, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai 200025, China
Shi-Zhu Li: National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Laboratory of Parasite and Vector Biology, Ministry of Public Health, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai 200025, China
Zhi-Guo Cao: Anhui Institute of Schistosomiasis Control, Hefei 230061, China
Yi-Xin Huang: Jiangsu Institute of Schistosomiasis Control, Wuxi 214064, China
Cheng-Guo Wu: Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
Zu-Wu Tu: Hubei Institute of Schistosomiasis Control, Wuhan 430079, China
Xiao-Nong Zhou: National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Laboratory of Parasite and Vector Biology, Ministry of Public Health, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai 200025, China

IJERPH, 2014, vol. 11, issue 2, 1-10

Abstract: Schistosomiasis japonica, caused by Schistosoma japonicum infection, remains a major public health concern in China, and the geographical distribution of this neglected tropical disease is limited to regions where Oncomelania hupensis , the intermediate host of the causative parasite, is detected. The purpose of this study was to monitor the transmission of S. japonicum in potential risk regions of China during the period from 2008 through 2012. To monitor the transmission, 10 fixed surveillance sites and 30 mobile sentinel sites were selected in 10 counties of four provinces, namely Anhui, Jiangsu, Chongqing and Hubei. There were 8, 9, 6, 2 and 3 cases infected with S. japonicum detected in the 30 mobile sentinel sites during the 5-year study period, while 27 subjects were positive for the antibody-based serum test in the 10 fixed sentinel sites; however, no infection was found. In addition, neither local nor imported livestock were found to be infected. No O. hupensis snails were detected in either the fixed surveillance or the mobile sentinel sites; however, the snail host was found to survive and reproduce at Chaohu Lake, inferring the potential of transmission of the disease. It is suggested that the continuous surveillance of schistosomiasis japonica should be carried out in both the endemic foci and potential risk regions of China, and an active, sensitive system to respond the potential risk of transmission seems justified.

Keywords: Schistosomiasis; Oncomelania hupensis; surveillance; potential endemic areas (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2014
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