Wen S T, Chu K Y
Ann Trop Med Parasitol. 1984 Apr;78(2):129-33. doi: 10.1080/00034983.1984.11811786.
Snail surveys were carried out in Kpong Lake, in southern Ghana, and along the lower Volta River below the lake. Bulinus globosus and Biomphalaria pfeifferi were abundant in the Kpong Lake and B. truncatus and Biom . pfeifferi, especially the latter, were widespread below the lake. Urine surveys among primary school children at eight localities along the lower Volta showed Schistosoma haematobium prevalence rates of 38.8-96.2%. At Bator and Mepe , where records for an earlier survey were available for comparison, the present survey showed more than a doubling in prevalence rate in ten years: at Bator , from 27.1% in 1971-72 to 74.6% in 1981; at Mepe the corresponding figures were 36.4 and 88.0%. In Ghana infection with S. mansoni is less common than with S. haematobium and the known foci of S. mansoni transmission are few and widely scattered. In the present survey the disease is first reported along the lower Volta at Bator , Mepe , Adidome and Tefle , with prevalence rates ranging from 6.7% at Bator to 52.4% at Tefle . This survey has added an important focus of S. mansoni infection to those already known.
在加纳南部的克庞湖以及该湖下游的沃尔特河下游进行了钉螺调查。克庞湖中有大量的球拟沼螺和费氏双脐螺，而截形双脐螺和费氏双脐螺（尤其是后者）在湖下游广泛分布。对沃尔特河下游八个地点的小学生进行的尿液调查显示，埃及血吸虫的患病率为38.8%至96.2%。在巴托尔和梅佩，有早期调查记录可供比较，本次调查显示十年间患病率增加了一倍多：在巴托尔，从1971 - 1972年的27.1%增至1981年的74.6%；在梅佩，相应数字分别为36.4%和88.0%。在加纳，曼氏血吸虫感染比埃及血吸虫感染少见，已知的曼氏血吸虫传播疫源地很少且分布广泛。在本次调查中，首次在沃尔特河下游的巴托尔、梅佩、阿迪多梅和泰弗莱报告了该病，患病率从巴托尔的6.7%到泰弗莱的52.4%不等。本次调查为已知的曼氏血吸虫感染疫源地增添了一个重要地点。
