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  • Title: [The current status of schistosomiasis epidemics in China].
    Author: Zhou XN, Wang TP, Wang LY, Guo JG, Yu Q, Xu J, Wang RB, Chen Z, Jia TW.
    Journal: Zhonghua Liu Xing Bing Xue Za Zhi; 2004 Jul; 25(7):555-8. PubMed ID: 15308031.
    Abstract:
    OBJECTIVE: To analyze the change of tendency on schistosomiasis epidemics in China in the last 5 years. METHODS: Data on schistosomiasis epidemics in the history and particularly in the last 5 years were collected. Tendency and the re-emerging status after 1998 were analyzed. RESULTS: Data in 2003 showed that in 42%, 40% and 53% of the provinces, counties and townships with epidemics, the transmission of the disease has been interrupted or controlled. The number of estimated patients of schistosomiasis and areas with snails were also reduced by 92.74% and 73.56%, in 2003. The annual estimated number of chronic cases was around 800 000 and 31 321.5 hectare of snail infested areas were newly identified in recent 5 years. Among 20 national villages under longitudinal surveillance, 30%, 70% and 35% of the villages were presented a tendency of increase in the rates of human infection, bovine infection and Oncomelania snails infection, respectively. A total of 38 counties from 7 provinces have re-emerged in schistosomiasis transmission after those counties having reached criteria of transmission under control or interrupted. In 6 non-endemic counties, snails were presented, and 16 marshlands in Xan river were found with appearance of acute cases of schistosomiasis. More snail infested areas were found in Shanghai, Zhejiang, and Fujian. Both snail infested areas and newly infected cases were occurred in urban areas along the Yangtze River. CONCLUSION: The tendency of increase was presented in focal areas along the Yangtze River, due to changes of environmental, ecological, societal and economic status, as well as on the forces of control.
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