Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, Mérida, México.
Vector Borne Zoonotic Dis. 2011 Aug;11(8):1141-4. doi: 10.1089/vbz.2010.0232. Epub 2011 Mar 11.
The prevalence of intestinal parasites in dogs and factors associated were studied in a rural community of Yucatan (southern Mexico), with special attention to those gastrointestinal parasites potentially transmitted to man. One hundred thirty dogs from 91 households were studied. Fecal samples were processed by the centrifugation-flotation and the McMaster techniques. To determine factors associated with zoonotic parasites in dogs, univariate analysis was performed, using sex, age, and body condition as independent variables. Variables with p < 0.2 were analyzed by a logistic regression. Of 130 dogs, 104 were positive for the presence of intestinal parasites, representing a prevalence of 80%. Eggs of four species of helminths (Ancylostoma caninum, Thichuris vulpis, Toxocara canis, and Dipylidium caninum) and coccidian oocysts were detected. A. caninum was the most prevalent parasite (73.8%), followed by T. vulpis (25.4%), T. canis (6.2%), D. caninum (2.3%), and coccidian oocysts (2.3%). The majority of dogs were infected by only one species of parasite (70/130, 53.8%). Mixed infection caused by two or three zoonotic parasites were discovered in 21.3% (30/130) and 3.1% (4/130), respectively. A. caninum showed the highest egg output (42.3% of dogs had ≥ 500 eggs per gram). Factors associated with zoonotic parasites were age (<2 years old; odds ratio = 5.30, p = 0.029) and body condition (poor body condition; odds ratio = 6.69, p = 0.026). In conclusion, young dogs from rural Yucatan, Mexico, with poor body condition had a higher prevalence of intestinal zoonotic parasites as these factors were associated with a higher risk of becoming infected.
在尤卡坦（墨西哥南部）的一个农村社区中，研究了狗的肠道寄生虫流行情况及其相关因素，特别关注那些可能传播给人类的胃肠道寄生虫。研究了来自 91 户家庭的 130 只狗。粪便样本通过离心漂浮和麦克马斯特技术进行处理。为了确定与狗的人畜共患寄生虫相关的因素，使用性别、年龄和身体状况作为独立变量进行了单变量分析。p<0.2 的变量通过逻辑回归进行分析。在 130 只狗中，有 104 只狗的粪便中存在肠道寄生虫，表明寄生虫感染率为 80%。检测到四种蠕虫（犬钩口线虫、狐毛首线虫、犬弓首蛔虫和复孔绦虫）的卵和球虫卵囊。最常见的寄生虫是犬钩口线虫（73.8%），其次是狐毛首线虫（25.4%）、犬弓首蛔虫（6.2%）、复孔绦虫（2.3%）和球虫卵囊（2.3%）。大多数狗仅感染一种寄生虫（70/130，53.8%）。两种或三种人畜共患寄生虫的混合感染分别发现于 21.3%（30/130）和 3.1%（4/130）的狗中。犬钩口线虫的卵产量最高（42.3%的狗每克粪便中有≥500 个卵）。与人畜共患寄生虫相关的因素是年龄（<2 岁；优势比=5.30，p=0.029）和身体状况（身体状况差；优势比=6.69，p=0.026）。综上所述，来自墨西哥尤卡坦农村地区、身体状况较差的年轻犬更容易感染肠道人畜共患寄生虫，因为这些因素与更高的感染风险相关。
