Chongsuvivatwong V, Uga S, Nagnaen W
Department of Epidemiology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand.
Southeast Asian J Trop Med Public Health. 1999 Mar;30(1):64-7.
The aim of this study was to test the association between soil contamination and infection of the household members by soil-transmitted helminths in dry and rainy seasons. A lake-side community in southern Thailand with a population of 2,340 was studied twice, in the dry season and rainy season of 1995. Fifty households were randomly selected. Soil samples near the latrine, in the yard, at the foot-washing area and under the trees were taken and analysed for presence of helminthic eggs. All members of the selected household were interviewed and stool samples obtained. Age-adjusted odds ratios of presence of Ascaris and Trichuris eggs in the household soil for ascariasis and trichuriasis were 10.5 (95% CI 1.5-77.1) and 5.5 (95% CI 2.4-12.7) in dry season and 10.4 (95% CI 2.5-43.8) and 8.3 (95% CI 3.4-20.0) in rainy season. The levels of hookworm eggs detected in the soil were too low to test the association. Soil analysis for eggs of Ascaris and Trichuris may be used to predict infections among the household members but not that for hookworm.
本研究的目的是检验旱季和雨季土壤污染与家庭成员感染土源性蠕虫之间的关联。对泰国南部一个有2340人的湖边社区在1995年的旱季和雨季进行了两次研究。随机选取了50户家庭。采集了厕所附近、院子里、洗脚区和树下的土壤样本，分析其中是否存在蠕虫卵。对所选家庭的所有成员进行了访谈并采集了粪便样本。旱季时，家庭土壤中存在蛔虫卵和鞭虫卵与蛔虫病和鞭虫病的年龄调整优势比分别为10.5（95%可信区间1.5 - 77.1）和5.5（95%可信区间2.4 - 12.7）；雨季时分别为10.4（95%可信区间2.5 - 43.8）和8.3（95%可信区间3.4 - 20.0）。土壤中检测到的钩虫卵水平过低，无法检验其关联性。对蛔虫卵和鞭虫卵进行土壤分析可用于预测家庭成员中的感染情况，但对钩虫则不可行。
