besnoitiosis

Is endemic in tropical and sub-tropical regions with high infection rate but low mortality; rare elsewhere. The cutaneous form of besnoitiosis in horses and burros, caused by Besnoitia bennetti; characterized by a widespread, serious dermatitis. The disease in cattle, caused by B. besnoiti, is a systemic one manifested by swelling of the lymph nodes, subcutaneous swellings, diarrhea, abortion and infertility.

Sclerodermatitis in a cow with besnoitiosis. By permission from Blowey RW, Weaver AD, Diseases and Disorders of Cattle, Mosby, 1997