【摘要】 [目的 ]　探讨江滩型血吸虫病重流行区易感地带灭螺费用和效益的关系。　 [方法 ]　试区 1996～ 2 0 0 0年每年实施易感地带灭螺、螺情调查和人畜同步查治。平均每年易感地带灭螺投入氯硝柳胺 0 .96t ,经费 4.32万元。　 [结果 ]　试区人畜血吸虫感染率徘徊不降的局面并无改观 ,钉螺面积增大 ,活螺框出现率、活螺平均密度、感染螺平均密度反而上升。　 [结论 ]　易感地带灭螺不宜每年进行 ,建议将灭螺经费投于健康教育、推广“以机代牛”、“以林代芦”和提高化疗覆盖率更多还原

【Abstract】 To evaluate the relation between cost and benefit of snail control in high risk area in the heavily endemic area of schistosomiasis in marshland. The selected chemotherapy in human and cattle combined with snail control in high risk area had been adopted in Leichi marshland from 1996 to 2000. For snail control 960 kilogram niclosamide were used cost 43200-yuan RMB each year. The prevalence rate of schistosomiasis in human and cattle had no change and the snail density had even increased. [Conclusion] It would be better to propagate "use tractor in plowing instead of using ox" and "plant trees to replace bulrush" and to increase the coverage of treatment in human and cattle every year.更多还原