Paştiu Anamaria I, Ajzenberg Daniel, Györke Adriana, Şuteu Ovidiu, Balea Anamaria, Rosenthal Benjamin M, Kalmár Zsuzsa, Domşa Cristian, Cozma Vasile
University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, Parasitology and Parasitic Diseases Department, 3-5 Mănăştur Street, cod 400372, Cluj-Napoca, Romania.
J Parasitol. 2015 Feb;101(1):45-9. doi: 10.1645/13-483.1. Epub 2014 Jul 8.
Raising goats in settings that are highly contaminated with oocysts of Toxoplasma gondii may contribute significantly to human exposure to this zoonotic parasite. Increasing consumption of young goats in countries where goats are frequently reared in backyards that are also homes to cats (the definitive host of this parasite) elevates such concern. To date, there has been little attention to either the prevalence or genotypic characteristics of T. gondii isolates in young ruminant food animals in Europe. Here, we estimated the prevalence of T. gondii goat-kids raised in backyards and slaughtered for human consumption during Easter. We collected 181 paired samples of serum and diaphragm. Serum samples were analyzed by enzyme-linked immunosorbent assay for antibodies against T. gondii , and muscle tissues were analyzed by polymerase chain reaction to detect T. gondii DNA. Thirty-two diaphragm samples were also bioassayed in mice, and the isolates were genotyped using microsatellite markers. The overall seroprevalence of T. gondii infection in goat-kids was 33.1% (60/181; 95% confidence interval [CI] 26.3-40.5%), and T. gondii DNA was found in 6.1% (11/181; 95% CI 3.1-10.6) of the diaphragm samples. We isolated the parasite from 2 of 32 goat-kids, and the T. gondii strains belonged to genotype II. The results showed that 1/3 of 3-mo-old goats may be infected with T. gondii, and their consumption during Easter (as barbecue) may seriously compromise food safety as a result.
在被刚地弓形虫卵囊高度污染的环境中饲养山羊,可能会极大地增加人类接触这种人畜共患寄生虫的风险。在一些国家,山羊常被饲养在兼作猫(该寄生虫的终末宿主)栖息地的后院中,而这些国家中幼山羊的消费量不断增加,这加剧了人们对这一问题的担忧。迄今为止,欧洲对幼龄反刍动物食用动物中弓形虫分离株的流行情况或基因型特征几乎没有给予关注。在此,我们估计了复活节期间在后院饲养并供人类食用而宰杀的幼龄山羊中弓形虫的感染率。我们收集了181对血清和膈肌样本。通过酶联免疫吸附测定法分析血清样本中抗弓形虫抗体,并通过聚合酶链反应分析肌肉组织以检测弓形虫DNA。还对32个膈肌样本在小鼠中进行了生物测定,并使用微卫星标记对分离株进行基因分型。幼龄山羊中弓形虫感染的总体血清阳性率为33.1%(60/181;95%置信区间[CI]26.3 - 40.5%),在6.1%(11/181;95%CI 3.1 - 10.6)的膈肌样本中发现了弓形虫DNA。我们从32只幼龄山羊中的2只分离出了该寄生虫,且弓形虫菌株属于II型。结果表明,3月龄山羊中有三分之一可能感染了弓形虫,在复活节期间食用这些山羊(如烧烤)可能会严重危及食品安全。