Equine Arteritis Virus (EAV) is a virus that primarily affects horses, causing a disease known as equine viral arteritis. It is transmitted through respiratory secretions, direct contact, or contaminated materials. Infected horses may show symptoms such as fever, swelling, and respiratory issues, but some may remain asymptomatic. EAV can lead to significant economic losses in the horse industry due to its impact on breeding. The virus can cause abortion in pregnant mares and may affect stallions' fertility. Vaccination is available to help control the spread of the virus and protect susceptible horses.