对1973～1986年关于非洲国家蛔虫感染率和分布的330篇资料作了调查,其中有许多未予采用。因有些文章只有蛔虫感染率而无检查人数,有许多报告则省略了年龄、性别,甚至简单地划分为儿童及成人。由于在非洲农村调查对象往往是自愿接受检查的,有关感染率的调查资料通常不可避免地有偏向性。 4亿8千万非洲人中有1亿5千5百万人感染蛔虫,蛔虫感染率平均为32.3％。其中5 400万人是不超过15岁的儿童。农村感染率较城市为高,儿童感染率高于成人,在最 A total of 330 articles on the frequency and distribution of roundworms in African countries from 1973 to 1986 were investigated, many of which were not used. Because some articles only have the infection rate of roundworms without checking the number of people, many reports omit age and sex, and even can be divided into children and adults. As rural survey respondents in Africa often voluntarily undergo screening, survey data on infection rates are often inevitably biased. Of the 480 million Africans, 155 million people are infected with roundworms, with an average roundworm infection rate of 32.3%. Of these, 54 million are children under the age of 15. Infection rate in rural areas is higher than that in urban areas, children’s infection rate is higher than that of adults, at the most