Objective To estimate the impact of the construction of wetland park on the east bank of the Yangtze River in Ma’anshan City on the transmission risk of schistosomiasis,so as to provide reference for the formulation and improvement of prevention and control strategies. Methods Investigations on oncomelania infestation,wild manure,human disease and water infection were carried out in the three years before construction (from 2016 to 2018),the construction year (2019) and the first year after construction (2020) to comprehensively evaluate the impact of the construction of the wetland park on schistosomiasis prevalence.And investigate wetland park visitors' exposure to infected water. Results From 2016 to 2020,the live oncomelania density in wetland park on the east bank of the Yangtze River was 0.25 /0.11 m2,0.30 /0.11 m2,0.22 /0.11 m2,0.42 /0.11 m2 and 0.65 /0.11 m2,respectively.From 2017 to 2020,0,1,1 and 3 oncomelania positive environments were detected by loop-mediated isothermal amplification (LAMP).The results of 1 and 3 rabbit feces in 2018 and 2020 were negative.From 2016 to 2020,the positive rate of blood test in villages adjacent to wetland park was 0.75%,0.80%,0.70%,2.36% and 0.50%,respectively.No infection was found in sentinel rats in 2018 and 2020,and no positive cercariae were found in 2020.Sixty-six percent of visitors to the wetland park had contact with infected water. Conclusion After the construction of Ma’anshan Yangtze River East Bank Wetland Park,there is a risk of schistosomiasis transmission.Monitoring and early warning should be strengthened,and schistosomiasis prevention measures should be further implemented.
Key words
Schistosomiasis /
Wetland /
Epidemic factors /
Oncomelania /
Investigation
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