Equine viral arteritis is a viral disease that can cause respiratory disease and abortion in horses. The vaccine in only recommended for use in stallions, open mares, and young horses 6 weeks of age or older. Pregnant mares and open mares or stallions that are within 3 weeks of being bred should not be vaccinated.

This fact sheet is published by the UK Department for Environment, Food & Rural Affairs (DEFRA). Covers disease history and transmission, clinical signs and symptoms, diagnosis, treatment, prevention and control measures, UK legislation, and vaccinations.

International Veterinary Information Service Fact Sheet - Equine viral arteritis (EVA) is a contagious respiratory disease of equids, so named for the characteristic inflammatory lesions induced by the causal virus in the smaller blood vessels, especially the arterioles of the acutely infected animal [1,2].

Equine viral arteritis (EVA) is an infectious viral disease of horses that causes a variety of clinical symptoms, most significantly abortions. The disease is transmitted through both the respiratory and reproductive systems. Many horses are either asymptomatic or exhibit flu­like symptoms for a short period of time.