Ort a contagious viral skin disease acquired from infected sheep and goats, characterized by painless vesicles that may progress to red, weeping nodules and finally to crusting and healing. Fingers, hands, wrist, and face are common sites. Orf is a risk for sheep farmers, shearers, freezing workers, or anyone that bottle-feeds a lamb. Children may also acquire it from playing on infected pasture or in a sheep shed. Butchers, meat porters and housewives are sometimes infected from carcasses, especially sheep heads.

Lists of diseases and disorders, signs, symptoms