Contagious ecthyma, also known as orf or
sore mouth, is a zoonotic disease, which means
that it is easily transmitted from animals to
humans. It induces acute pustular lesions in the
skin of goats, sheep, and wild ruminants worldwide.
Young animals are the most susceptible to
contracting the disease. Kids and lambs can
contract sore mouth after a few weeks of birth.
However, sore mouth outbreaks in young animals
are most frequent during postweaning.