Houe H
National Veterinary Laboratory, Copenhagen V, Denmark.
Res Vet Sci. 1992 Nov;53(3):320-3.
In 10 herds containing animals persistently infected (PI) with bovine viral diarrhoea virus (BVDV) and nine herds without such animals the probabilities of obtaining at least two antibody-positive animals in a test sample of three or five animals selected among animals six to 18 months old were calculated. Among herds with PI animals these probabilities, with the exception of one herd, varied between 0.725 and 0.992 when samples of three animals were tested and between 0.977 and one when samples of five animals were tested. Among herds without PI animals the probabilities varied between 0 and 0.015 when samples of three animals were tested and between 0 and 0.048 when samples of five animals were tested. Thus, based upon a few blood samples, herds with PI animals and herds without PI animals could be distinguished with a high degree of accuracy.
在10个存在持续感染牛病毒性腹泻病毒（BVDV）动物的牛群和9个不存在此类动物的牛群中，计算了从6至18月龄动物中选取3只或5只动物组成的检测样本中至少获得两只抗体阳性动物的概率。在存在持续感染动物的牛群中，除一个牛群外，检测3只动物样本时这些概率在0.725至0.992之间，检测5只动物样本时在0.977至1之间。在不存在持续感染动物的牛群中，检测3只动物样本时概率在0至0.015之间，检测5只动物样本时在0至0.048之间。因此，基于少量血液样本，可高度准确地区分存在持续感染动物的牛群和不存在持续感染动物的牛群。
