Systematic Veterinary Virology

LESIONS

• The skin lesions include congestion, haemorrhage, oedema, vasculitis and necrosis. All the layers of epidermis, dermis and sometimes musculature are involved. The lymph nodes draining infected areas enlarge up to eight times normal size with lymphoid proliferation, oedema, congestion and haemorrhage.
• Typical pox lesions are noticed on mucous membranes of the eyes, mouth, nose, pharynx, epiglottis, trachea, on the rumenal and abomasal mucosae, and on the muzzle, nares, in the vulva, prepuce, testicles, udder, and teats. The lung lesions include severe and extensive pox lesions, focal and uniformly distributed throughout the lungs; congestion, oedema, focal areas of proliferation with necrosis, and lobular atelectasis.