Yeitz Jennifer L, Gillin Colin M, Bildfell Rob J, Debess Emilio E
College of Veterinary Medicine, Oregon State University, Corvallis, Oregon 97331, USA.
J Wildl Dis. 2009 Jan;45(1):14-8. doi: 10.7589/0090-3558-45.1.14.
We investigated the prevalence of Baylisascaris procyonis in raccoons living in the metropolitan area of Portland, Oregon, USA, in order to assess the potential public health risk involved in the transmission of B. procyonis to humans and companion animals. Sixty-nine euthanized raccoons were collected from Portland wildlife-control agencies. Infection with B. procyonis was determined through the harvesting of adult worms from raccoon intestines during necropsy and by fecal analysis using modified double-centrifugation technique with a sugar-flotation solution. Fifty-eight percent of sampled raccoons were found to be infected with B. procyonis. Juveniles represented a greater percentage (64%) of raccoons captured by wildlife-control agents and were found to have the highest prevalence (70%) and heavier adult worm burdens (mean=35 worms). No gender bias was evident. This is one of the few studies of Baylisascaris prevalence in the Pacific Northwest, and it demonstrates that there is a high prevalence of B. procyonis in raccoons inhabiting the Portland area. This factor should be considered in raccoon relocation and management. The data also suggest that juvenile raccoons are the major potential source of B. procyonis contamination in the Portland community and may merit special attention to minimize their interaction with humans.
我们调查了美国俄勒冈州波特兰大都市区浣熊体内的犬弓首蛔虫感染率，以评估犬弓首蛔虫传播给人类和伴侣动物所涉及的潜在公共卫生风险。从波特兰野生动物控制机构收集了69只安乐死的浣熊。通过尸检时从浣熊肠道采集成虫以及使用糖浮选溶液的改良双离心技术进行粪便分析来确定犬弓首蛔虫感染情况。发现58%的采样浣熊感染了犬弓首蛔虫。野生动物控制人员捕获的浣熊中，幼崽占比更大（64%），且发现其感染率最高（70%），成虫负担也更重（平均35条虫）。未发现明显的性别差异。这是太平洋西北地区为数不多的关于犬弓首蛔虫感染率的研究之一，它表明在波特兰地区的浣熊中犬弓首蛔虫感染率很高。在浣熊迁移和管理中应考虑这一因素。数据还表明，幼浣熊是波特兰社区犬弓首蛔虫污染的主要潜在来源，可能需要特别关注以尽量减少它们与人类的接触。
