Carvalho O dos S, Massara C L, Silveira Neto H V, Alvarenga A G, Vidigal T H, Guerra H L, Santos M A, Chaves A, Katz N
Centro de Pesquisas René Rachou - FIOCRUZ, Belo Horizonte, MG, Brasil.
Mem Inst Oswaldo Cruz. 1994 Oct-Dec;89(4):509-12. doi: 10.1590/s0074-02761994000400003.
In order to reevaluate the possible presence of schistosomiasis mansoni in the Triângulo Mineiro, one of the areas of the State of Minas Gerais where this parasite is not commonly found, malacological survey and fecal examinations were undertaken in the region between October 1990 and June 1992. A sample of 7,032 1st grade school children from 29 counties had their feces examined using the Kato-Katz method. Amongst the children examined, two from Planura and one from each countie of Capinópolis, Conceição das Alagoas, Uberaba, Uberlândia, Prata and Gurinhatã were positive for Schistosoma mansoni. None of the children were identified as being autoctonous cases. In the malacological survey, 5,406 planorbid snails were examined. The specimens were identified morphologically and examined for S. mansoni by squashing between glass plates. The species were identified as Biomphalaria tenagophila in three counties, as B. straminea in ten and B. intermedia in 16. No snails were found in eight other counties studies. The snails were found to be negative for S. mansoni. The presence of intermediate hosts for S. mansoni, associated with parasitized individuals emphasizes the necessity of epidemiological surveillance for schistosomiasis in the region of Triângulo in the State of Minas Gerais.
为了重新评估米纳斯吉拉斯州三角地区（该地区通常未发现曼氏血吸虫病）是否存在曼氏血吸虫病，于1990年10月至1992年6月期间在该地区进行了软体动物学调查和粪便检查。对来自29个县的7032名一年级学童的粪便样本采用加藤厚涂片法进行检查。在接受检查的儿童中，普拉努拉的两名儿童以及卡皮诺波利斯、阿拉戈斯州康塞ição、乌贝拉巴、乌贝兰迪亚、普拉塔和古里尼亚塔等县各有一名儿童曼氏血吸虫检测呈阳性。没有儿童被认定为本地病例。在软体动物学调查中，共检查了5406只扁卷螺。通过形态学鉴定标本，并通过在玻璃板之间挤压来检查是否感染曼氏血吸虫。在三个县鉴定出的物种为嗜气管双脐螺，十个县为稻草双脐螺，十六个县为中间双脐螺。在其他八个研究县未发现扁卷螺。这些扁卷螺被发现对曼氏血吸虫呈阴性。曼氏血吸虫中间宿主的存在以及有寄生虫感染的个体，凸显了对米纳斯吉拉斯州三角地区进行血吸虫病流行病学监测的必要性。
