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Medical Definition of Pestivirus
1. A genus of flaviviridae, also known as mucosal disease virus group, which is not arthropod-borne. Transmission is by direct and indirect contact, and by transplacental and congenital transmission. Species include border disease virus, bovine viral diarrhoea virus (diarrhoea virus, bovine viral), and hog cholera virus. (12 Dec 1998)