Alenius S, Niskanen R, Juntti N, Larsson B
National Veterinary Institute, Swedish University of Agricultural Sciences, Uppsala.
Acta Vet Scand. 1991;32(2):163-70. doi: 10.1186/BF03546976.
Sera from 9 dairy herds with epizootic enteritis (winter dysentery) were examined for antibodies to bovine coronavirus (BCV) and bovine virus diarrhoea virus (BVDV). Cows in 8 of the 9 herds seroconverted to BCV alone, while the animals in the ninth herd, which showed severe symptoms of the disease, seroconverted both to BCV and BVDV. The BCV antibodies, which were present in high titres 1 year postinfection, were transferred to the offspring via the colostrum and were then detectable in sera of calves until these were approximately 5 months old. A serological survey of 549 Swedish heifers showed that 61% of the animals were reactors to BCV. The prevalence of seroreactors to BCV was equally distributed over Sweden but was commonly either high or low in herds. In conclusion, BCV is commonly detected in animals suffering from winter dysentery. A co-infection with BVDV appears to aggravate the disease.
对9个患有流行性肠炎（冬季痢疾）的奶牛群的血清进行了检测，以检测其针对牛冠状病毒（BCV）和牛病毒性腹泻病毒（BVDV）的抗体。9个牛群中有8个牛群的奶牛仅对BCV发生血清转化，而第九个牛群中表现出严重疾病症状的动物则对BCV和BVDV均发生血清转化。感染后1年时，BCV抗体以高滴度存在，并通过初乳传递给后代，然后在犊牛血清中可检测到，直至犊牛约5个月大。对549头瑞典小母牛的血清学调查显示，61%的动物对BCV呈反应阳性。对BCV呈血清反应阳性的情况在瑞典各地分布均匀，但在牛群中通常要么很高要么很低。总之，在患有冬季痢疾的动物中普遍检测到BCV。与BVDV的共同感染似乎会加重病情。
