Bovine viral diarrhea, bovine viral diarrhoea or mucosal disease, and previously referred to as bovine virus diarrhoea, is an economically significant disease of cattle that is found in the majority of countries throughout the world. Bovine viral diarrhea is a viral disease of cattle and other ruminants that is caused by the bovine viral diarrhea virus (BVDV). Bovine viral diarrhea (BVD), bovine viral diarrhoea (UK English) or mucosal disease, and previously referred to as bovine virus diarrhoea (BVD), is an economically significant disease of cattle. Infected cattle shed BVDV in various body fluids and tissues including saliva, nasal discharge, blood, feces, urine, and aborted fetal tissues. Bovine Viral Diarrhea (BVD) is a disease of cattle caused by the Bovine Viral Diarrhea Virus (BVDV). Bovine Virus Diarrhoea Virus (BVDV) is a viral disease of cattle that causes reproductive losses and a range of other disease syndromes in cattle.