Evaluation of effectiveness of integrative intervention on Clonochis sinensis infection in a village of Shenzhen City.

Objective To evaluate measures of health education,toilet modification and metacercaria monitoring of fresh water fish so as to control infection and tansmission of Clonochis sinensis (C. sinensis). Methods The infection status of C. sinensis in 1473 individuals (710 males and 763 females) were determined. The antibody of C. cinensis in blood sampling was detected with ELISA,and stool specimens of sera positive case were examined by modified Kato-Katz thick smear method. Uestionaire survey was also conducted by trained staff members for their life style and habits. Meantime health education and modication of toilets and other intervention activities were also carried out on people's habit of eating raw fish. Results The infection rate of C. sinensis before intervetnioin and two years after intervention decreased from 4.75% (70/1473)to 3.2%(47/1468),metacercaria infection rate of fresh water fish also decreased from 21.9%(38/173)to 11%(22/200),cercaria infection rate of snial descended from 1.6%(6/358) to 0.9%(5/530). The knowledge level of residents increased from 54% to 95%. Conclusion The integrated control measures can enhance the knowlesge level of the inhabitants and reduce the infection rate of C. sinensis