 eradication programs, vaccination strategies and biosecurity measures) incurred by BVD infection have been published.The causative agent, bovine viral diarrhea virus (BVDV), is a member of the genus "Pestivirus" of the family Flaviviridae.BVD infection results in a wide variety of clinical signs, due to its immunosuppressive effects, as well as having a direct effect on respiratory disease and fertility.