Santarém Vamilton Alvares, Pereira Vanessa Cristina, Alegre Beatriz Cristina Porto
Laboratory of Preventive Veterinary Medicine II (Animal Parasitology), Veterinary Teaching Hospital, Universidade do Oeste Paulista, Presidente Prudente, SP, Brazil.
Rev Bras Parasitol Vet. 2012 Jul-Sep;21(3):323-5. doi: 10.1590/s1984-29612012000300029.
This study aims to evaluate soil contamination by Toxocara spp. eggs in public parks in Presidente Prudente, São Paulo, Brazil. Soil samples (500 g) were collected every month over a 12-month period, from 25 parks in different parts of the city (northern, southern, eastern, western and central areas). Two 10-g aliquots of the material collected from each park were subjected to the centrifuge-flotation method to recover Toxocara spp. eggs. Twenty-four out of the 25 squares studied (96.0%) were contaminated and the number of eggs recovered ranged from 1 to 398 per sample. Eggs were recovered all over the year. Despite the number being greater in autumn (p < 0.001), there was no correlation between number egg number and average monthly temperature (r = -0.492; p = 0.148) or between egg number and monthly rainfall (r = -0.299; p = 0.402). Park localization does not influence egg presence (p = 0.7116). Because of the high level of contamination of the parks by Toxocara spp. eggs, prevention of contamination of public areas by larva migrans agents is indicated.
本研究旨在评估巴西圣保罗州普鲁登特总统城公园土壤中弓蛔虫属虫卵的污染情况。在12个月的时间里，每月从该市不同区域（北部、南部、东部、西部和中部地区）的25个公园采集土壤样本（500克）。从每个公园采集的两份10克材料等分试样采用离心浮选法回收弓蛔虫属虫卵。在所研究的25个广场中，有24个（96.0%）受到污染，每个样本回收的虫卵数量从1个到398个不等。全年均能回收虫卵。尽管秋季的虫卵数量较多（p < 0.001），但虫卵数量与月平均温度之间无相关性（r = -0.492；p = 0.148），虫卵数量与月降雨量之间也无相关性（r = -0.299；p = 0.402）。公园位置不影响虫卵的存在（p = 0.7116）。鉴于公园被弓蛔虫属虫卵高度污染，建议预防公共区域被幼虫移行症病原体污染。
