儿童因特殊的活动方式和游乐环境易于感染土源性蠕虫。公园特别是受到犬、猫严重污染的游乐场地,成为感染的重要来源。本文旨在观察评估公共游乐场地被弓首线虫卵污染的程度、虫卵密度并确定这些地点感染性或胚胎期虫卵长期存活的适宜条件。 从土壤中收集虫卵,采用Quinn等(1980)的改良硝酸钠饱和溶液漂浮法,作者 Children are susceptible to earthworm worms due to special activities and recreational environment. Parks, especially playgrounds contaminated by dogs and cats, have become an important source of infection. This article aims to observe and evaluate the extent of egg contamination of the bowland nematodes in public playgrounds, egg density and to determine the appropriate conditions for the long-term viability of infective or embryo eggs in these locations. The eggs were collected from the soil using a modified sodium nitrate saturated solution floatation method of Quinn et al. (1980)