Cátedra de Microbiología y Parasitología, Escuela de Medicina, Universidad Nacional del Comahue, Buenos Aires 1400, J.B. Alberdi 136, (8300) Neuquén, Argentina.
Vet Parasitol. 2010 Jan 20;167(1):81-5. doi: 10.1016/j.vetpar.2009.09.048. Epub 2009 Oct 7.
The presence of parasites was investigated by the examination of 1944 dog faecal samples collected from urban (n=646) and rural (n=1298) areas of the province of Neuquén, Patagonia, Argentina. Parasitic agents (PA) were found in 37.86% of samples. A total of 15 different PA were detected, including Toxocara canis (16.35%), Taenia spp./Echinococcus spp. (12.65%), Trichurisvulpis (6.06%), Giardia spp. (1.29%), Toxascaris leonina (0.56%), Ancylostomacaninum (0.41%), Dipylidium caninum (0.31%), Diphyllobothrium spp. (0.10%), among others. Several of these PA are recognized as zoonotic agents. Therefore, the results of this investigation revealed that local population is exposed to a broad spectrum of zoonotic parasites by means of environmental contamination with dog faeces. Prevalence of PA was slightly higher in rural (40.06%) than in urban (33.44%) locations. Distribution of groups of PA (cestodes, nematodes, and protozoa) showed statistical differences between both habitats. Prevalence of cestodes (18.18%) and protozoa (11.86%) was significantly higher in the rural environment than in urban areas and nematodes (29.10%) were more frequent in urban locations. Infection of dogs with Linguatula serrata and Cryptosporidium sp. was demonstrated for the first time in Neuquén. Rural dogs of the study area are under hydatic disease control program, which includes treatment with praziquantel every 6 weeks; thus, the finding of high level of cestode infection in these areas is of great relevance. The epidemiology of zoonotic parasitic infections in urban and rural dogs showed different patterns and, in consequence, different control measurements should be applied in each location.
本研究调查了阿根廷巴塔哥尼亚内乌肯省城市（n=646）和农村（n=1298）地区采集的 1944 份犬粪便样本中寄生虫的存在情况。在 37.86%的样本中发现了寄生虫。共检测到 15 种不同的寄生虫，包括犬弓首蛔虫（16.35%）、带绦虫/细粒棘球绦虫（12.65%）、毛首线虫（6.06%）、贾第虫属（1.29%）、狮弓蛔虫（0.56%）、犬钩口线虫（0.41%）、复孔绦虫（0.31%）、阔节裂头绦虫（0.10%）等。其中一些寄生虫被认为是人畜共患寄生虫。因此，该调查结果表明，当地居民通过狗粪便污染的环境暴露于广泛的人畜共患寄生虫中。农村地区（40.06%）寄生虫的流行率略高于城市地区（33.44%）。两种生境中寄生虫（绦虫、线虫和原生动物）的分布存在统计学差异。农村地区的绦虫（18.18%）和原生动物（11.86%）感染率明显高于城市地区，而城市地区的线虫（29.10%）更为常见。本研究首次在内乌肯证明了犬感染舌形虫和隐孢子虫。研究区域的农村犬受包虫病控制计划的控制，包括每 6 周用吡喹酮治疗；因此，这些地区发现高水平的绦虫感染具有重要意义。城市和农村犬的人畜共患寄生虫感染的流行病学显示出不同的模式，因此，应在每个地区应用不同的控制措施。
