| bovine leukosis virus | A type C retrovirus in the subfamily Retrovirinae, commonly infecting cattle, especially dairy cows; in a small proportion of infected cattle, it will cause enzootic bovine leukosis. Synonym: bovine leukosis virus. (05 Mar 2000) |
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| sporadic bovine leukosis | A rare disease of cattle less than 3 years of age, of unknown cause, characterised by the development of lymphosarcoma; three clinicopathological forms are recognised: calf or juvenile form, thymic form, and cutaneous form. (05 Mar 2000) |
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| enzootic bovine leukosis | A lymphoid neoplastic disease in cattle caused by the bovine leukaemia virus. Enzootic bovine leukosis may take the form of lymphosarcoma, malignant lymphoma, or leukaemia but the presence of malignant cells in the blood is not a consistent finding. (12 Dec 1998) |
| avian leukosis-sarcoma virus | avian leukosis-sarcoma complex |
| leukosis virus, avian | The type species of avian type c retroviruses (retroviruses type c, avian) producing latent or manifest lymphoid leukosis in fowl. (12 Dec 1998) |
| bovine virus diarrhoea virus | A virus of the genus Pestivirus, in the family Togaviridae, causing bovine virus diarrhoea; New York, Oregon, and Indiana strains of the virus are recognised. Synonym: mucosal disease virus. (05 Mar 2000) |
| avian leukosis | A group of transmissible, virus-induced diseases of chickens, characterised by proliferation of immature erythroid, myeloid, or lymphoid cells. It includes both leukaemic and solid-tumour forms. (12 Dec 1998) |
| fowl leukosis | A group of transmissible, virus-induced diseases of chickens, characterised by proliferation of immature erythroid, myeloid, or lymphoid cells. It includes both leukaemic and solid-tumour forms. (12 Dec 1998) |
| bovine ephemeral fever virus | A rhabdovirus causing bovine ephemeral fever in cattle. (05 Mar 2000) |
| bovine immunodeficiency virus | A lentivirus causing lymphocytosis in cattle. (05 Mar 2000) |
| bovine leukaemia virus | A type C retrovirus in the subfamily Retrovirinae, commonly infecting cattle, especially dairy cows; in a small proportion of infected cattle, it will cause enzootic bovine leukosis. Synonym: bovine leukosis virus. (05 Mar 2000) |
| bovine papular stomatitis virus | A poxvirus of the genus Parapoxvirus, reported from North America, Africa and Europe, causing bovine papular stomatitis. Synonym: papular stomatitis virus of cattle. (05 Mar 2000) |
| bovine respiratory syncytial virus | A pneumovirus causing an emerging disease in young cattle characterised by pneumonia, interstitial pulmonary oedema, and emphysema; sheep are also susceptible to the virus. (05 Mar 2000) |
| bovine virus diarrhoea | A specific infectious disease of cattle, caused by a togavirus; characterised by ulceration of the mouth, pharynx, oesophagus, and sometimes the stomachs and intestines; may or may not be accompanied by severe diarrhoea. Synonym: mucosal disease. (05 Mar 2000) |
| bovine virus diarrhoea-mucosal disease | Acute disease of cattle caused by the bovine viral diarrhoea virus (diarrhoea virus, bovine viral). Often mouth ulcerations are the only sign but fever, diarrhoea, drop in milk yield, and loss of appetite are also seen. Mortality is high in animals showing clinical signs, especially diarrhoea. (12 Dec 1998) |
| papilloma virus, bovine | A species of papilloma virus producing large numbers of warts on calves. Connective tissue proliferation is an important component of the warts. (12 Dec 1998) |