Appleton C C, Gouws E
Department of Zoology and Entomology, University of Natal, Scottsville, South Africa.
Ann Trop Med Parasitol. 1996 Apr;90(2):181-8. doi: 10.1080/00034983.1996.11813042.
In order to study the effect of climate and topography on the distribution of common, intestinal nematodes in schoolchildren, changes in prevalence were investigated along an altitudinal transect from approximately 50 m above sea level (asl), near the coast, to approximately 1700 m asl, in the foothills of the Drakensberg Mountains, KwaZulu-Natal, South Africa. These changes were related to several permutations of temperature, rainfall and evaporation, using univariate and multiple regression analyses. A total of 693 primary schoolchildren aged between 7 and 15 years was examined from six communities along the 150-km transect. Changes in the prevalence of Trichuris trichiura were significantly correlated with temperature-derived variables whereas those of Ascaris lumbricoides and Necator americanus were correlated with rainfall-derived variables. A total of 17 parasite species was recovered along the transect but polyparasitism was negatively correlated with altitude.
为研究气候和地形对学童常见肠道线虫分布的影响，在南非夸祖鲁 - 纳塔尔省德拉肯斯堡山脉山麓，沿着一条从海平面约50米（靠近海岸）到海拔约1700米的海拔样带，调查了患病率的变化。利用单变量和多元回归分析，将这些变化与温度、降雨量和蒸发量的几种组合相关联。沿着这条150公里的样带，对来自六个社区的693名7至15岁的小学生进行了检查。鞭虫的患病率变化与温度衍生变量显著相关，而蛔虫和美洲板口线虫的患病率变化与降雨量衍生变量相关。沿着样带共发现了17种寄生虫，但多重寄生虫感染与海拔呈负相关。
