MeSH definition : A poxvirus infection of poultry and other birds characterized by the formation of
wart-like nodules on the skin and diphtheritic necrotic masses (cankers) in the upper
digestive and respiratory tracts.;
A poxvirus infection of poultry and other birds characterized by the formation of
wart-like nodules on the skin and diphtheritic necrotic masses (cankers) in the upper
digestive and respiratory tracts.