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粪检计数曼氏血吸虫卵差异很大,且灵敏度低,往往低估流行情况。用随机模型能描述虫卵数的分布,亦可区分不同个体及同一个体重复检测时的差异。以此模型为基础建立了一袖珍图,以通过单次调查患病率和几何平均虫卵数,预测感染一对以上曼氏血吸虫个体的患病率。本文通过由袖珍图预测的患病率与实验方法观察的患病率的比较,验证此袖珍图。
Manually seized count Schistosoma mansoni eggs vary widely, and the sensitivity is low, often underestimate the prevalence. Stochastic models can be used to describe the distribution of egg numbers and to distinguish between different individuals and the same individual during repeated tests. Based on this model, a pocket map was established to predict the prevalence of more than one pair of individuals infected with Schistosoma mansoni by a single investigation of the prevalence and geometric mean number of eggs. This article verifies this pocket map by comparing the predicted prevalence of pocket maps with the prevalence of experimental observations.