Baluku B, Bagalwa M, Basabose K
Laboratoire de Malacologie, Centre de Recherche en Sciences Naturelles de Lwiro, République Démocratique du Congo.
Med Trop (Mars). 1999;59(1):39-42.
Bilharziasis due to Schistosoma mansoni is widespread in the eastern part of the People's Republic of the Congo, particularly in the Ruzizi plain area. The intermediate host is the fresh-water snail Biomphalaria pfeifferi whose ecology is now well documented. Bilharziasis due to Schistosoma haematobium and Schistosoma intercalatum have not yet been observed but the potential for this development is high given the presence of the intermediate hosts, i.e. Bulinus truncatus, Bulinus globosus, and Bulinus forskalii, and the migration of populations in the area. Malacological and cercariometric studies were undertaken in 3 refugee camps in 1995. Findings showed that Biomphalaria pfeifferi was present in all water systems tested but that levels varied from 21 p. 100 to 70 p. 100 from one camp to another. The rate of infestation by Biomphalaria pfeifferi varied from 37 to 20 p. 100 depending on the sampling site. Given the prevalence of Schistosoma mansoni in the population, extension of bilharziasis is likely in the Ruzizi plain area and its surroundings. Potential intermediary hosts for Schistosoma haematobium and Schistosoma intercalatum were of lower relative prevalence and were found in specific biotopes. The authors propose methods of controlling water snails and preventing infection of people and water systems.
由曼氏血吸虫引起的血吸虫病在刚果人民共和国东部广泛流行，特别是在鲁济济平原地区。中间宿主是淡水螺类费氏扁卷螺，其生态学现已得到充分记录。由埃及血吸虫和间插血吸虫引起的血吸虫病尚未被观察到，但鉴于中间宿主截形水泡螺、球形水泡螺和福氏水泡螺的存在以及该地区人口的迁移，这种疾病发生的可能性很大。1995年在3个难民营进行了软体动物学和尾蚴测量研究。结果表明，在所有测试的水系中均存在费氏扁卷螺，但不同营地的含量从21%到70%不等。费氏扁卷螺的感染率因采样地点而异，从37%到20%不等。鉴于曼氏血吸虫在人群中的流行情况，血吸虫病在鲁济济平原地区及其周边地区可能会蔓延。埃及血吸虫和间插血吸虫的潜在中间宿主相对患病率较低，且在特定的生物群落中被发现。作者提出了控制钉螺以及预防人和水系感染的方法。
