ANALYSIS OF COMPREHENSIVE BENEFIT ON INSTALLATION OBSTRUCTED SNAILS IN LARGE IRRIGATION CANALS FOR PREVENTING SNAILS SPREADING
- VernacularTitle:大型灌渠增设阻螺设施防止钉螺扩散综合效益分析
- Author:
Chenggang WANG
;
Wen TAO
;
Zhihua NIE
;
Binggui YU
;
Xingjia XU
- Publication Type:Journal Article
- Keywords:
Schistosomiasis;
Irrigation canals;
Installation obstructed snails;
Analysis of benefit
- From:
Chinese Journal of Schistosomiasis Control
1989;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the comprehensive benefit about the installation obstructed snails in large irrigation canals for preventing snails spreading in lake-swamp areas of schistosomiasis.Methods The installation obstructed snails was set up in upper reaches of main canal Shilong, Tianmen City Data of snails and schistosomiasis prevalance were collected and analysed. The comprehesive benefit was analysed with the cost-benefit methods of economic hygienics. Results After the installation obstructed snails was set up the snails areas and human infection rate decreased markedly. New patients with acute and advanced schistosomiasis were not found in the irrigation areas. The ratio of comprehesive cost-benefit was 1∶9.84,the ratio of net benefit was 8.84∶1. Conclusion Setting up the installation obstracted snails to cut off the way of snails spreading was the effective measure of control schistosomiasis in lake-swamp areas.
