来自四个加勒比岛屿的小型反刍动物弓形虫血清阳性率
Seroprevalence of Toxoplasma gondii in small ruminants from four Caribbean islands.
作者信息
Hamilton Clare M, Katzer Frank, Innes Elisabeth A, Kelly Patrick J
机构信息
Ross University School of Veterinary Medicine, PO Box 334, Basseterre, St, Kitts, West Indies.
出版信息
Parasit Vectors. 2014 Sep 23;7:449. doi: 10.1186/1756-3305-7-449.
BACKGROUND
Toxoplasma gondii is a protozoan parasite capable of infecting all warm-blooded animals including livestock. In these animals, the parasite forms cysts in the tissues which may pose a risk to public health if infected meat is consumed undercooked or raw. Little is known of the epidemiology of T. gondii in the Caribbean; therefore, the aim of this study was to determine T. gondii exposure in small ruminants from four Caribbean island nations.
FINDINGS
Sera from 305 sheep and 442 goats from Dominica, Grenada, Montserrat and St. Kitts and Nevis were examined for T. gondii antibodies using an in house ELISA. Reactive antibodies were detected in sheep and goats, respectively, from Dominica (67%, 37/55; 58%, 79/136), Grenada (48%, 40/84; 57%, 54/94), Montserrat (89%, 25/28; 80%, 25/31) and St. Kitts and Nevis (57%, 78/138; 42%, 76/181).
CONCLUSIONS
Our results suggest widespread environmental contamination with T. gondii oocysts and that small ruminants could be a potentially important source of T. gondii infection if their infected meat is consumed undercooked.
背景
刚地弓形虫是一种原生动物寄生虫，能够感染包括家畜在内的所有温血动物。在这些动物体内，寄生虫会在组织中形成包囊，如果食用未煮熟或生的受感染肉类，可能会对公众健康构成风险。对于加勒比地区刚地弓形虫的流行病学了解甚少；因此，本研究的目的是确定来自四个加勒比岛国的小反刍动物的刚地弓形虫感染情况。
研究结果
使用内部酶联免疫吸附测定法（ELISA）检测了来自多米尼克、格林纳达、蒙特塞拉特以及圣基茨和尼维斯的305只绵羊和442只山羊的血清中的刚地弓形虫抗体。在来自多米尼克（67%，37/55；58%，79/136）、格林纳达（48%，40/84；57%，54/94）、蒙特塞拉特（89%，25/28；80%，25/31）以及圣基茨和尼维斯（57%，78/138；42%，76/181）的绵羊和山羊中分别检测到了反应性抗体。
结论
我们的结果表明环境中广泛存在刚地弓形虫卵囊污染，并且如果食用未煮熟的受感染小反刍动物肉，它们可能是刚地弓形虫感染的一个潜在重要来源。
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