[BVD outbreak can be costly: a case report].

The losses caused by an BVD-outbreak on a Dutch dairy farm with approximately 100 dairy cows were determined. In this particular farm, calves which were born around the same time as a detected carrier calf were not sampled. These carrier calves were kept on as replacement heifers and caused additional loss on top of the losses already caused by the primary outbreak. The total economic loss was more than f 96.000,- or nearly f 1000,-per cow. This case report illustrates the potential for serious economic loss when an BVD free herd is reinfected combined with less adequate control measures.