Alonso J M, Stein M, Chamorro M C, Bojanich M V
Institute of Regional Medicine, North-East National University, Resistencia, Aregentina.
J Helminthol. 2001 Jun;75(2):165-8.
A total of 475 soil samples were collected from five public park playgrounds, 17 kindergarten sandpits and 124 housing estates in Resistencia, a medium-sized subtropical-region city in Argentina, and processed by the centrifugal flotation method. Eggs of Toxocara spp. were present in five (3.4%) of the 146 habitats surveyed and in six (1.3%) of the 475 samples examined. Twenty per cent of public parks, 5.9% of kindergarten sandpits and 2.4% of housing estates were contaminated with Toxocara eggs. Depending on the number of samples examined from the three types of habitat, contamination by Toxocara was 0.7% in public park playgrounds, 1.2% in kindergarten sandpits and 1.6% in the housing estates. High prevalences of Ancylostomidae eggs were also found especially in public park playgrounds with a value of 100%, compared with 19.4% found in housing estates and 11.8% in kindergarten samples. These results suggest that in Resistencia, human infections with Toxocara are likely to occur within the limits of housing estates more so than in public parks or open spaces.
从阿根廷亚热带地区的中型城市雷西斯滕西亚的五个公共公园游乐场、17个幼儿园沙坑和124个住宅区共采集了475份土壤样本，并采用离心浮选法进行处理。在所调查的146个栖息地中，有5个（3.4%）存在弓蛔虫属虫卵，在475份检测样本中有6个（1.3%）存在该虫卵。20%的公共公园、5.9%的幼儿园沙坑和2.4%的住宅区被弓蛔虫卵污染。根据从这三种类型栖息地采集的样本数量，公共公园游乐场的弓蛔虫污染率为0.7%，幼儿园沙坑为1.2%，住宅区为1.6%。钩口科线虫卵的高感染率也很明显，尤其是在公共公园游乐场，感染率达100%，相比之下，住宅区为19.4%，幼儿园样本为11.8%。这些结果表明，在雷西斯滕西亚，人类感染弓蛔虫更有可能发生在住宅区范围内，而不是在公共公园或开放空间。
