Anderson T J, Zizza C A, Leche G M, Scott M E, Solomons N W
Center for Studies of Sensory Impairment, Aging and Metabolism (CeSSIAM), Hospital de Ojos y Oidos, Guatemala City.
Mem Inst Oswaldo Cruz. 1993 Jan-Mar;88(1):53-65. doi: 10.1590/s0074-02761993000100010.
Fecal egg count scores were used to investigate the distribution and abundance of intestinal helminths in the population of a rural village. Prevalences of the major helminths were 41% with Ascaris lumbricoides, 60% with Trichuris trichiura and 50% with Necator americanus. All three parasites showed a highly aggregated distribution among hosts. Age/prevalence and age/intensity profiles were typical for both A. lumbricoides and T. trichiura with the highest worm burdens in the 5-10 year old children. For hookworm both prevalence and intensity curves were convex in shape with maximum infection levels in the 30-40 year old age class. Infected females had higher burdens of T. trichiura than infected males in all age classes of the population; there were no other effects of host gender. Analysis of associations between parasites within hosts revealed strong correlations between A. lumbricoides and T. trichiura. Individuals with heavy infections of A. lumbricoides and T. trichiura showed highly significant aggregation within households. Associations between a variety of household features and heavy infections with A. lumbricoides and T. trichiura are described.
粪便虫卵计数分数被用于调查一个乡村人群中肠道蠕虫的分布和丰度。主要蠕虫的患病率分别为：蛔虫41%、鞭虫60%、美洲板口线虫50%。这三种寄生虫在宿主中均呈现高度聚集分布。蛔虫和鞭虫的年龄/患病率及年龄/感染强度曲线具有典型特征，5至10岁儿童的蠕虫负担最高。对于钩虫，患病率和感染强度曲线均呈凸形，30至40岁年龄组的感染水平最高。在该人群的所有年龄组中，感染鞭虫的女性比感染鞭虫的男性负担更重；宿主性别没有其他影响。对宿主内寄生虫之间关联的分析显示，蛔虫和鞭虫之间存在强相关性。蛔虫和鞭虫重度感染的个体在家庭中呈现高度显著的聚集。描述了各种家庭特征与蛔虫和鞭虫重度感染之间的关联。
