Rioux J A, Decamps H, Lanotte G, Combes C, Théron A, Pointier J F, Seytor S, Delattre P, Bougerol C
Rev Epidemiol Sante Publique. 1978 Mar 15;25(5-6):483-519.
In Guadeloupe, during a general survey on intestinal schistosomiasis, the authors made a structural analysis of a limited focus of infection. The focus is formed by a river basin on the Carribean coast of Basse-Terre island. Sampling of the various elements of the parasitic cycle was done in spatial units defined by ecological and epidemiological criteria. The study of corresponding populations shows that: -- inside the twelve delimited sectors, only two include both hosts and parasites. They are zones with ditches and small temporary streams; -- the vector (Biomphalaria glabrata) density is always high in inhabited sectors; -- the rat, although present over the whole river basin, is only parasitized near inhabited places; -- fluorescent antibody level is an excellent indicator of the level of infection of human populations. Its variation can be detected in a time interval of less than one year; -- distance from contaminated water is one of the principal risk factors. A mathematical expression for this is given.
在瓜德罗普岛进行的一次关于肠道血吸虫病的全面调查中，作者对一个有限的感染疫源地进行了结构分析。该疫源地由巴斯特尔岛加勒比海岸的一个流域构成。在由生态和流行病学标准界定的空间单位中，对寄生虫循环的各个要素进行了采样。对相应人群的研究表明：——在划定的12个区域内，只有两个区域同时存在宿主和寄生虫。它们是有沟渠和小型临时溪流的区域；——在有人居住的区域，中间宿主（光滑双脐螺）的密度一直很高；——老鼠虽然在整个流域都有，但只在靠近有人居住的地方被寄生；——荧光抗体水平是人群感染水平的一个极佳指标。其变化可在不到一年的时间间隔内被检测到；——与受污染水的距离是主要风险因素之一。为此给出了一个数学表达式。
