Wiktionary
sheeppox
n. A highly contagious disease of sheep caused by a poxvirus.
Wikipedia
Sheeppox
Sheeppox (or sheep pox, known as variola ovina in Latin, clavelée in French, Pockenseuche in German) is a highly contagious disease of sheep caused by a poxvirus different from the benign orf (or contagious ecthyma).
Sheep pox is the most severe of all the pox diseases of animals.
Goatpox is a similar disease of goats, caused by a virus antigenically distinct from sheeppox virus.