Summary Schoolchildren in primary schools are mostly at risk of acquiring soil-transmitted helminths (STHs) infections due to their habits (geophagy, onychophagy and playing with barefoot). Profiling soil parasites on school playgrounds is expected to provide an insight to an array of parasites schoolchildren are constantly at risk of acquiring; and this information could guide on intervention programmes. Soil samples from sixteen primary school playgrounds in Edo State (South-South, Nigeria) were collected over a six-month period both in the dry (January, February and March) and wet (May, June and July) seasons in 2018 and early 2019. Samples were processed and analysed following standard parasitological procedures. Of the 576 soil samples collected, 318(55.2 %) were positive with one or more soil parasites. Generally, the predominant parasites recovered from the total number of soil samples collected were: Ascaris 127(22 %), Strongyloides 111(19.27 %) and hookworm 50(8.68 %). Ascaris was most preponderant in the dry season, while Strongyloides was the most occurring in the wet season. The mean differences in the parasite load for Ascaris and hookworm between dry and wet seasons were not significant; while for Strongyloides it was higher in the wet than dry season. These results could be a consequence of observed poor state of toilet/sanitary facilities as well as the lack or poor state of basic infrastructure like proper drainage and waste disposal systems in the host communities. There is therefore urgent need to interrupt the STHs transmission cycles in the environment and possibly in schoolchildren by instituting sustainable intervention programmes within schools located in STHs endemic regions like southern Nigeria.

中文翻译：

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尼日利亚南部埃多州小学操场土源性蠕虫流行情况

摘要 小学学童由于其习惯（食土、食甲、赤脚玩耍），大多面临土源性蠕虫（STH）感染的风险。对学校操场上的土壤寄生虫进行分析有望深入了解学童经常面临感染风险的一系列寄生虫；这些信息可以指导干预计划。在 2018 年和年初的旱季（1 月、2 月和 3 月）和雨季（5 月、6 月和 7 月）期间，从埃多州（尼日利亚南南地区）16 个小学操场收集了土壤样本。 2019。按照标准寄生虫学程序处理和分析样品。在收集的 576 个土壤样品中，318 个（55.2%）土壤寄生虫检测呈阳性。总体而言，从收集的土壤样品中回收的主要寄生虫为：蛔虫127种（22％），类圆线虫111种（19.27％）和钩虫50种（8.68％）。蛔虫在旱季最多，而类圆线虫在雨季最多。旱季和雨季蛔虫和钩虫寄生虫数量的平均差异并不显着；而对于类圆线虫来说，雨季的发病率高于旱季。这些结果可能是由于观察到厕所/卫生设施状况不佳以及所在社区缺乏或基础设施状况不佳（例如适当的排水和废物处理系统）造成的。因此，迫切需要通过在尼日利亚南部等 STH 流行地区的学校内实施可持续的干预计划来中断 STH 在环境中以及可能在学童中的传播周期。