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目的 掌握“十五”期间湖南省血吸虫病疫情流行现状及变化趋势 ,为制订防治策略和规划提供科学依据。方法 在全省不同流行程度疫区建立 2 0个疫情纵向观察点 ,对螺情、居民病情、牛感染情况进行监测。结果 2 0个观察点粪检 6 5 6 3人 ,感染率为 8.15 % ;76 4头牛 ,感染率为10 .99%。活螺平均密度垸内为 0 .0 10 0 - 3.2 2 6 8只 /框 ,垸外为 1.4 4 4 3只 /框。感染螺平均密度垸外为 0 .0 0 5 1只 /框 ,垸内未查到感染性钉螺。结论 我省疫区居民血吸虫感染率仍处在较高的水平 ,牛仍是主要传染源 ,湖区垸外感染威胁仍十分严重。
Objective To grasp the prevalence and trend of epidemic situation of schistosomiasis in Hunan Province during the “Tenth Five-year Plan” period and provide scientific basis for formulating prevention and control strategies and plans. Methods A total of 20 longitudinal epidemic sites were established in epidemic areas of different epidemic proportions in the province to monitor the infection of snail, residents and cattle. Results A total of 6 563 fecal samples from 20 observation sites were collected and the infection rate was 8.15%. Among 76 4 cattle, the infection rate was 10.99%. The mean density of live snails was 0 .0 10 0 - 3.2 2 6 8 / box, 1.4 4 4 3 / box outside the embankment. The average density of infection spiral embankment was 0. 0 0 5 1 / box, did not find infectious snails embankment. Conclusion The infection rate of schistosomiasis in our province is still at a high level, and the cow is still the main source of infection. The threat of outbreak outside the lake is still very serious.