高山型重疫区分阶段优化防治控制血吸虫病研究

目的 研究大山区高山型重疫区血吸虫病优化的防治对策。方法 对一高山型重疫村前３年实施以人，畜化疗为主，辅以易感带灭螺；后２年实施以灭螺为主，辅以清查治疗传染源的分阶段优化防治措施。结果 通过连续５年前后两个阶段不同措施的防治，第１阶段人，牛感染率，钉螺面积分别下降７７．２７％，６９．１４％和４９．８６％，第２阶段分别下降９５．５０％，９０．０２％和９２．０１％；低年龄组人群新感染率由防治前的７．８

STUDIES ON OPTIMIZED CONTROL MEASURES OF VARIED STAGES FOR SCHISTOSOMIASIS CONTROL IN MOUNTAINOUS REGIONS

Objective To study the optimized control measures for schistosomiasis japonica in high endemic areas Yunnan mountainous regimens. Methods One village high endemic areas in Nanjian County, Yunnan Province was selected as the pilot of the study. The optimized control mea sures of varied stages were used from 1994 to 1998. Mass chemotherapy with praziquantel and focal mollusciciding were conducted in the first three years, and overall snail control and selective chemotherapy were conducted in the following two years. Results Tile infection rates of inhabitants and cattle, the area of snail habitats reduced by 77. 27 %, 69. 14 % and 49. 86% respectively in the first stage, and reduced by 95. 50%, 90. 02% and 92. 01 % respectively in the second slage. The infection rate of children dropped from 7. 81 % to 0. Conclusion Tile optimized control measures of varied stages can effectively control schistosomiasis in mountainous regions.