Ace the NAVLE 2025: Unleash Your Veterinary Super Skills!

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Which animal is the primary carrier of Malignant Catarrhal Fever (MCF) virus in North America?

Cattle

Horse

Sheep

Malignant Catarrhal Fever (MCF) is primarily caused by a virus from the Herpesviridae family and is associated with specific host species. In North America, sheep, particularly domestic sheep, are the primary carriers of the MCF virus. The virus is typically transmitted to susceptible species, such as cattle and wild ruminants, through close contact with infected sheep or their secretions.

Other species, such as horses and donkeys, can develop MCF but are not considered primary reservoirs or carriers of the virus. While cattle can be affected by MCF, they do not act as a natural reservoir in the way that sheep do. Understanding the role of sheep in the epidemiology of MCF is essential for managing and preventing outbreaks, particularly in agricultural settings where sheep and cattle may interact.

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