Clinical responses and reproductive outcomes in pregnant ewes experimentally infected with bovine viral diarrhoea virus (type-1c) between days 59 and 69 of gestation

Results from this study suggest that acute BVDV-1c infections in sheep are clinically in-apparent, unless infection occurs in a pregnant flock, where severe reproductive losses can be seen at lambing. To eliminate the reproductive losses associated with BVDV infection close contact between sheep and cattle, of unknown BVDV status, should be avoided during the joining and pregnancy periods.