| ephemeral fever virus, bovine | The type species of ephemerovirus causing disease in cattle. Transmission is by haematophagous arthropods and the virus has been isolated from both culicoides and mosquitoes. (12 Dec 1998) |
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| epizootic bovine abortion | An infectious disease of cattle transmitted by the tick Ornithodoros coriaceus and manifested as abortion or weak calves at birth; occurs in the foothills of California, Nevada, and Oregon. Synonym: foothill abortion. (05 Mar 2000) |
| tuberculosis, bovine | An infection of cattle caused by mycobacterium bovis. It is transmissible to man and other animals. (12 Dec 1998) |
| lentiviruses, bovine | A subgenus of lentivirus comprising viruses that produce multi-organ disease with long incubation periods in cattle. (12 Dec 1998) |
| leukaemia virus, bovine | The type species of HTLV-blv viruses that causes a form of bovine lymphosarcoma (enzootic bovine leukosis) or persistent lymphocytosis. (12 Dec 1998) |