云南大山区血吸虫病优化防治对策的研究

Study on Optimal Strategies for Control of Schistosomiasis in Yunnan Mountainous Regions

本文以计量流行病学方法对云南大山区血吸虫病的防治对策作分组定量研究，用经济效益分析法对几种防治方案进行分析评价。结果表明，采取人畜普遍化疗加重点环境灭螺杀蚴及健康教育的防治对策奏效迅速，效果显著。实施这一对策４年后，居民感染率由２４．９％降至０．２％，家畜感染率降为０，儿童无新感染，查不到阳性钉螺，水体测定无感染性。经济效益评价表明此对策费用较低。实施这一对策能够迅速控制血吸虫病流行和阻断传播，但应加强巩固工作。

A study on optimal strategies for control of schistosomiasis in four groups from 8 natural villages in Yunnan mountainous regions (mountainous valley type) was made from 1992 to 1995. The results from study by the methods of metrological epidemiology showed that after the strategy on mass chemotherapy in population and livestock+ control of snail and cercaria in high transmission areas+hea1th education was carried out for four years in the pilot area,the infection rate of inhabtitants reduced from 24. 9% to 0. 2%, the infection rate of domestic animals reduced to 0%,there was no new infection of children , infected snail was not found in the field investigation, and cercariae-infected water was not detectde out. The results from the cost-effect analysis also showed that the effect not only was better but the cost was lower in the strategy. It was stressed yet to strengthen the effect for control of schistosomiasis.