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MCF is an infectious, viral disease of many ruminants, including bison and sheep. MCF is caused by a group of viruses that belong to the herpes virus family. In North America, MCF is caused by ovine herpes virus-2 (OHV -2), which infects sheep with no ill effects and spreads to susceptible species. Bison tend to be very susceptible, and deaths are frequent in exposed animals.
Malignant catarrhal fever is a provincially notifiable disease for farmed bison.
- Fact sheet about malignant catarrhal fever in bison and sheep, including cause of the disease, diagnosis, treatment and control.