Observe sound management practices to limit exposure to respiratory infections with isolation of new arrivals for 3-4 weeks and keep pregnant mares in small, isolated groups.

Follow any national, state, or local guidelines regarding testing of horses for the equine arteritis virus and vaccination

Separately manage carrier stallions to avoid the risk of inadvertent spread of the virus to previously uninfected or unvaccinated horses on the premises

Breed carrier stallions only to naturally positive mares or mares adequately immunized against equine viral arteritis

If recommended, vaccinate breeding stallions and colts against the disease between 6 and 12 months of age (before puberty and before significant risk of infection)

Test fresh-cooled or frozen semen used for artificial insemination, especially if imported, for virus