洲滩地区两种防治对策控制血吸虫病的效果

为探讨洲滩地区控制血吸虫病的防治对策，1992～1995年选择两个相似的外滩以不同防治对策进行了现场观察，结果在实施人畜扩大化疗＋健康教育＋滩地治理防治的洲滩，人、畜感染率，感染螺密度及钉螺感染率分别下降93．1％、72．6％、66．7％和77．3％，而实施人畜化疗＋易感地带灭螺防治的洲滩人畜感染率分别下降25．0％、18．6％，感染螺密度及钉螺感染率上升12．5％和19．4％；人群感染率每下降1％所需的实际费用，前者高于后者，但相对效果前者为0．64元优于后者0元．

EVALUATION ON EFFECTS OF TWO COMPREHENSIVE STRATEGIES FOR SCHISTOSOMIASIS CONTROL ON RIVER BEACHES

In order to explore the strategy of schistosomiasis control in river beaches, the study of effect evaluation on different control strategies was carried out in two river beaches in Anhui Province from 1992 to 1995. The results showed that the infection rates of residents and cattles,infected snail density and infection rate of snail dropped 93. 1%,72. 6%, 66. 7% and 77. 3% respectively in the river beach where comprehensive control strategy including the expanded chemotherapy on the people and poultry, healthy education and beach prevention methods had been conducted. In the river beach where only general control strategy including chemotherapy on the people and poultry and killing snails in vulnerable areas had been carried out, the infection rate of the residents and cattles decreased 25. 0% and 18. 6% respectively,and the infected snail density and infection rate of snail increased 12. 5% and 19. 4% respectively. The cost of the resident infection rate decreasing 1% was slightly higher in the forearea than in the latter, but the relative effect of the forearea was 0. 64 Yuan which was better than the zero Yuan of the latter.