Equine Viral Arteritis in its nature is usually non-fatal. The main negative effects of EVA on your horse are that they'll become sick enough that current training programs and riding will have to be delayed for about 14-28 days. This means that your horse would have to be withdrawn from any scheduled races or competitions that they are to attend.

Most mares and stallions recover well and the main goal is identification of this conatgious virus to ensure control of its spread. Those animals that get sick and recover from EVA develop full immunity, therefore, once they get over the sickness, they should not get sick from this virus again. Since this is mainly a disease of reproduction in horses, there is not a lot of risk to non-breeding owners. The main risk would be competitive horse owners who may go to a competition where the horses at the competition facilities may be contracting this virus. Appropriate actions should be taken to know if there has been a recent outbreak at the location of which you are going to compete at, and to ensure limited contact with horses from other locations to minimize the transfer of this organism by respiratory secretions, bedding, foamites, etc.

Should your horse become infected with EVA, it is important to report this to your veterinarian so appropriate actions can be taken to ensure prevention of spread of this virus, and so the veterinarian can provide appropriate supportive care for your horse if required. If you are travelling to an area where there is high risk of contracting this virus, or you decide you want to breed your mare or stallion and are worried about EVA, contact your veterinarian for information on vaccination protocols and appropriate actions to take.