Objective: To understand the distribution and characteristics of historical Oncomelania hupensis snail environments and wetland environments in Wuxi City since 1952, so as to provide the evidence for formulating the monitoring strategy after the schistosomiasis transmission was interrupted.
Methods: A cross-sectional survey was conducted to collect the information of historical O. hupensis snail environments and wetland environments. Google Earth was used to present and analyze the distribution and characteristics of them.
Results: There were 2 124 historical O. hupensis snail environments in Wuxi City and the accumulative area was 2 995.7 hm2. In 2013, there were 61 surveillance sites of wetland with the area of 32.8 hm2; totally 1 695 snails were caught and no O. hupensis snails were found.
Conclusion: The historical O. hupensis snail environments were distributed widely and covered a large area in Wuxi City. The surveillance should be focused on the key environments and wetland.
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