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Tuberculosis in Horses

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 Jun 2016

Horses are relatively resistant to tuberculosis caused by Mycobacterium tuberculosis; however, they are susceptible to M bovis. When tuberculosis does develop, tuberculous, noncalcified lesions are often found in the liver, mesenteric lymph nodes, lungs, and other sites. Tuberculin test results are rather erratic.

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