[Correlation between schistosomiasis endemic situation and Oncomelania snail status in Yizheng City, Jiangsu province from 2002 to 2011].

Objective: To understand the correlation between schistosomiasis endemic situation and Oncomelania snail status, and discuss the control strategy and measures.

Methods: With a retrospective research method, the data were collected and analyzed including the snail area, infected snail area, snail density, density of infected snails, the infection rate of snails, the positive rates of blood tests and stool examinations for schistosomiasis in residents and domestic animals, and the incidence of acute schistosome infection in Yizheng City from 2002 to 2011. The correlation between the infected snails and schistosomiasis was analyzed.

Results: There were decline trends in snail area, infected snail area, and schistosomiasis situation. There were positive correlations between the infected snail area and snail area (r = 0.732, P < 0.05), the occurrence of acute schistosomiasis patients and infected snail area (r = 0.678, P < 0.05), and the snail area and schistosome infection rate of residents (r = 0.774, P < 0.05).

Conclusion: In order to control schistosomiasis, we need to control infected snails, reduce snail areas, and implement comprehensive control measures.