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Tuberculosis in Dogs

By

Charles O. Thoen

, DVM, PhD, Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University

Last full review/revision Aug 2014 | Content last modified Oct 2014

Dogs may be infected with Mycobacterium tuberculosis, M bovis, and occasionally with M avium complex or M fortuitum, commonly from a human or bovine source. Tuberculous lesions are usually found in the lungs, liver, kidney, pleura, and peritoneum; they have a gray appearance, usually with a noncalcified, necrotic center. Lesions are often exudative and can produce a large quantity of straw-colored fluid in the thorax. False-negative tuberculin tests are often seen in dogs. Radiographs and a thorough history are useful in diagnosis. Treatment is not often recommended. Affected dogs in close contact with people should be euthanized because of public health concerns.

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Clostridial Diseases
Anaerobic clostridial bacteria release toxins that can cause severe localized and systemic disease, many of which can be fatal if untreated. Which one of the following clostridial diseases results in intravascular hemolysis, hemolytic anemia, and hemoglobinuria in cattle?
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