BY DVM CODY W. FAERBER.
Introduction/Causative Agent: Contagious ecthyma (CE), also known as soremouth or orf, is an acute infectious disease of sheep and goats. Contagious ecthyma is caused by a virus that is a member of the poxvirus group. The disease is widespread in the sheep population and affects all breeds. Young animals are generally more susceptible than adults.