Chunge R N, Karumba N, Ouma J H, Thiongo F W, Sturrock R F, Butterworth A E
World Wildlife Regional Office, Eastern Africa, Nairobi, Kenya.
J Trop Med Hyg. 1995 Dec;98(6):440-4.
Formol-ether concentration supplemented by fresh saline smears was used to study intestinal parasites in two communities, Miu and Kitengei, in Machakos District, Kenya. These communities differed markedly in schistosome associated morbidity, in spite of similar prevalence and intensities of infection as revealed by Kato examination, Seven helminth and nine protozoan species were detected among 1011 samples examined. More than 60% of the subjects were infected with more than one parasite: one had nine. Age-prevalence curves were typical for the different species, and overall prevalence of some protozoa, including Entamoeba spp. and Blastocystis hominis, exceeded that of the commonest helminth, Schistosoma mansoni. However, the observed prevalence of S. mansoni was barely 40% of that detected by Kato examinations. Strong associations were found between some pairs of protozoan species, but not with or among the helminths. The differences in the abundance and age-specific distribution of the other intestinal parasites at Miu and Kitengei were so small that it is unlikely that interactions between them and S. mansoni would account for the differences in schistosomal morbidity.
采用甲醛 - 乙醚浓缩法并辅以新鲜生理盐水涂片，对肯尼亚马查科斯区的两个社区——缪村和基滕盖伊村的肠道寄生虫进行了研究。尽管加藤检查显示这两个社区的血吸虫感染率和感染强度相似，但它们在血吸虫相关发病率上存在显著差异。在检查的1011份样本中，共检测到7种蠕虫和9种原生动物。超过60%的受试者感染了不止一种寄生虫，其中一人感染了9种。不同物种的年龄 - 患病率曲线具有典型性，一些原生动物（包括溶组织内阿米巴属和人芽囊原虫）的总体患病率超过了最常见的蠕虫曼氏血吸虫。然而，观察到的曼氏血吸虫患病率仅为加藤检查所检测到的患病率的40%。在一些原生动物物种对之间发现了很强的关联性，但蠕虫之间或蠕虫与原生动物之间未发现这种关联性。缪村和基滕盖伊村其他肠道寄生虫的丰度和年龄特异性分布差异很小，因此它们与曼氏血吸虫之间的相互作用不太可能解释血吸虫病发病率的差异。
