Babiker A, Fenwick A, Daffalla A A, Amin M A
J Trop Med Hyg. 1985 Apr;88(2):57-63.
In the Gezira Irrigated Area of Central Sudan, transmission of Schistosoma mansoni was shown to be geographically focal, being concentrated near villages and small settlements. In a study during 1981 and 1982 of the entire area around a typical Gezira village almost 90% of the Biomphalaria pfeifferi snails carrying schistosome infections were found in one minor canal near the village. Sites near smaller settlements some distance from the minor canals yielded few infected snails. The factors which influenced the prevalence of infection in the snails were temperature, turbidity and human contact with the snail habitat. A strategy was proposed for control of Schistosoma transmission through focal and seasonal mollusciciding, health education, chemotherapy, improved water supply and latrine distribution.
在苏丹中部的杰济拉灌溉区，曼氏血吸虫的传播呈现出地理聚集性，集中在村庄和小居民点附近。在1981年至1982年对杰济拉一个典型村庄周边整个区域进行的一项研究中，几乎90%感染血吸虫的费氏扁卷螺是在村庄附近的一条小运河中发现的。距离小运河有一段距离的较小居民点附近的地点，感染的螺蛳很少。影响螺蛳感染率的因素有温度、浊度以及人类与螺蛳栖息地的接触。有人提出了一项通过定点和季节性灭螺、健康教育、化疗、改善供水和分发厕所来控制血吸虫传播的策略。
