Perry B D, Grieve A S, Mogollon J D, de Galvis A L
Vet Rec. 1978;103(26-27):584-5. doi: 10.1136/vr.103.26-27.584.
A total of 1655 ovine sera from the six principal sheep rearing areas of Colombia were examined for toxoplasma antibodies using the indirect haemagglutination test. It was shown that 58 per cent of these samples had titres of 1/16 or greater. Seropositive animals were distributed throughout all the areas studied. The possible factors affecting the distribution of seropositive sheep in one of the areas are discussed.
使用间接血凝试验对来自哥伦比亚六个主要养羊地区的1655份绵羊血清进行了弓形虫抗体检测。结果显示，其中58%的样本滴度为1/16或更高。血清阳性动物分布在所有研究区域。文中讨论了影响其中一个地区血清阳性绵羊分布的可能因素。
