pigeon with avian poxvirus infection, pigeon disease

animal bird art pet head clothing sculpture costume mammal organ dog carving wing face nose beak toy wildlife pigeon avian poxvirus infection disease pox virus chick young little flu white background isolated columba livia monkey viral transmission contagious illness pain biology care risk doctor smallpox medicine health epidemic prevention pandemic medical treatment infectious variola vaccination poxviridae dermatology vaccine symptom spreading therapy