Holland C V, Asaolu S O, Crompton D W, Stoddart R C, Macdonald R, Torimiro S E
Department of Zoology, Trinity College, Dublin, Ireland.
Parasitology. 1989 Oct;99 Pt 2:275-85. doi: 10.1017/s003118200005873x.
An epidemiological survey of intestinal helminthiases was conducted on 766 primary school children aged 5-16 years from Ile-Ife, Nigeria. On the basis of stool examinations, the prevalence of Ascaris lumbricoides, Trichuris trichiura, hookworm and Strongyloides stercoralis was 88.5, 84.5, 33.1 and 3% respectively. Intensity of infection was measured indirectly by egg counts for each species of helminth and also by counting worms passed after chemotherapy in the case of A. lumbricoides. The influence of host age and sex on infection levels was assessed. Relationships between the intensities of A. lumbricoides, T. trichiura and hookworm in individual children were identified. After anthelmintic treatment with levamisole, the frequency distribution of A. lumbricoides per host and the relationship between parasite fecundity and worm burden were investigated. Reinfection patterns of A. lumbricoides were assessed at two 6-monthly intervals and even within the narrow age range described, differences were found. In addition, evidence was obtained for predisposition of individuals to heavy or light infection with A. lumbricoides.
对尼日利亚伊莱-伊费地区766名5至16岁的小学生进行了肠道蠕虫病的流行病学调查。根据粪便检查结果，蛔虫、鞭虫、钩虫和粪类圆线虫的感染率分别为88.5%、84.5%、33.1%和3%。通过对每种蠕虫的虫卵计数间接测量感染强度，对于蛔虫，还通过计算化疗后排出的蠕虫数量来测量感染强度。评估了宿主年龄和性别对感染水平的影响。确定了个体儿童中蛔虫、鞭虫和钩虫感染强度之间的关系。用左旋咪唑进行驱虫治疗后，研究了每个宿主蛔虫的频率分布以及寄生虫繁殖力与虫负荷之间的关系。在两个6个月的间隔期评估了蛔虫的再感染模式，即使在所述的狭窄年龄范围内，也发现了差异。此外，还获得了个体易患重度或轻度蛔虫感染的证据。
