Orf (Contagious Ecthyma) in Goats: Signs, Treatment, and Prevention

Orf, also called contagious ecthyma, contagious pustular dermatitis, or soremouth, is a viral skin disease of goats and sheep caused by the orf virus, a parapoxvirus. It most often affects the lips and other skin-to-mucosa junctions, especially in young goats, but lesions can also appear on the face, ears, teats, udder skin, and around the coronary band of the feet.

The classic lesions start as small raised bumps and progress to pustules, ulcers, and thick crusty scabs. In many goats, the disease is self-limiting and heals without scarring over about 1 to 4 weeks. Even so, it can still cause meaningful herd problems because painful mouth lesions may reduce nursing and feed intake, while teat lesions can make does reluctant to let kids nurse.

Orf is often more severe in goats than in sheep. It also matters because it is zoonotic, meaning people can catch it through broken skin after handling infected goats, scabs, contaminated equipment, or live vaccine material. If anyone in the household develops a suspicious skin lesion after goat contact, they should contact a human healthcare professional and mention the exposure.

Orf is caused by the orf virus (Parapoxvirus orf). Goats usually become infected through direct contact with an infected animal or through fomites such as feeders, fencing, halters, bedding, or handling equipment contaminated with scabs and lesion material. The virus typically enters through small cuts or abrasions in the skin.

This virus is notably hardy in the environment. It can survive for long periods in dried scabs, which helps explain why the disease can recur on farms and spread when new goats are introduced or when animals are stressed, weaned, transported, or shown. Kids are commonly affected because erupting teeth and active nursing create tiny areas of skin trauma around the mouth.

Live orf vaccines can also seed the environment because they contain live virus. That is why vaccination decisions should be made with your vet and herd goals in mind. In herds that have never had orf, bringing in vaccine virus may create a new source of contamination, while in herds with repeated outbreaks, vaccination may be a practical prevention tool.

Your vet will often start with the history, herd pattern, and appearance of the lesions. Thick proliferative scabs around the lips and muzzle are very suggestive of orf, especially in kids. Still, diagnosis should not rely on appearance alone when the outbreak pattern is unusual, lesions are severe, or there is any concern for other reportable or high-consequence diseases.

When confirmation is needed, your vet may submit scab material, lesion swabs, or tissue for PCR testing. PCR is the preferred laboratory method for confirming contagious ecthyma and distinguishing it from similar parapoxvirus infections. In U.S. diagnostic lab fee schedules, lesion PCR testing may be around $50 to $75 at the lab level, though the total client cost is often higher once sample collection, shipping, and veterinary exam fees are included.

Your vet may also discuss other possible causes of mouth or foot lesions, including foot-and-mouth disease, bluetongue, peste des petits ruminants, staphylococcal skin disease, ulcerative dermatosis, or trauma with secondary infection. If many goats are affected, if there is fever or sudden severe illness, or if lesions do not fit the usual pattern, your vet may recommend a broader workup and biosecurity precautions right away.

Prevention starts with biosecurity and skin protection. Quarantine new arrivals, avoid sharing halters and feeders between groups without cleaning, and reduce rough surfaces that can cause small cuts around the mouth or teats. Because the virus can persist in dried scabs for years, removing contaminated bedding and organic debris matters, but pet parents should know that environmental control can be challenging once orf is established on a property.

If you have an active case, isolate affected goats when practical, wear disposable gloves, wash hands well, and keep children or immunocompromised people away from lesions and scabs. Handle nursing does carefully, because teat lesions can spread infection between kids and dams. Show herds and herds with repeated outbreaks often need a stricter plan for movement, equipment, and contact with outside animals.

Vaccination can be useful in persistently affected herds or in goats at predictable risk, such as some show animals, but it should be discussed with your vet before use. Orf vaccines are live vaccines and can introduce or maintain the virus on a farm, so they are generally not recommended for closed, uninfected herds. Vaccinated goats should be kept apart from unprotected animals until vaccine scabs have fallen off, and anyone administering vaccine should wear gloves and avoid self-inoculation.

Good nutrition, parasite control, and prompt attention to mouth, teat, and foot injuries also help reduce the impact of disease. Even when prevention is not perfect, early recognition and fast herd-level management can limit spread and reduce setbacks in growth, nursing, and milk production.