Herpesviruses are species-specific, meaning if you have a cold sore caused by a herpesvirus, you can’t give it to your horse. Five types of herpesviruses affect domestic horses. Of those five, only three are known to commonly cause disease: equine herpesvirus-1, equine herpesvirus-3, and equine herpesvirus-4.

Once a horse is infected, it carries the virus for life. When a horse is stressed, by transport or competition, the virus becomes active and can cause disease or spread. Each type of herpesvirus can cause different problems in your horse. These can include conjunctivitis; lesions; abortion; respiratory, venereal, and neurological disease; and death.

This free report provides the horse owner and caretaker with an overview of the types of herpesvirus and their effects on horses.