Specific sequence amplification of bovine virus diarrhea virus (BVDV) and hog cholera virus and sequencing of BVDV nucleic acid

Pestivirus Infections in Bulgaria. Epidemiological Studies in Cattle, Sheep, Swine and Goats

“…Similar variations have been from other countries in some goats and sheep (18,19,20). By serological examination (1,6,7,8,9,10,11,15) found ovine field strains of BD virus to be antigenically more closely related to the Oregon Strain than to the NADL strain. In the present study, investigations sera in cattle, heifers, sheep, ewes showed a lower antibody titre against the Alfort-187 strain than against the other strains.…”

“…5, 9, 12, 13). Accordingly, antibodies against BVDV, BDV and HCV, which is mostly non-cytopathic, may be detected and quantified in a neutralization test with a cytopathic strain of BVDV and HCV virus (1,3,14,15,18).…”

“…Bovine virus diarrhoea virus (BVDV), Border disease virus (BVD), Classical swine fever (CSF) are widely spread in cattle, sheep, goads, swine, pigs (1,8,12,13,14). Their pathogenic is marked economical im-pacts on ruminants and swine.…”

“…Antigenic differences between BVDV, BVD and CSV is detected in cross-neutralization reaction (1,3,4,5,21,24,26). Some investigations found BVD Strains that reacted more strongly with certain BVDV antisera than with BVD antiserum (8,9,10,12).…”

“…Virus investigations is demonstrated that BVDV and BVD stains are capable of infecting cattle, sheep, goads, swine and pigs (1,16,17,23). In small ruminants, pestivirus infection is the cause of border disease (BDV) (4,5,6,14,15,16), which is a congenital condition (17,19,21).…”