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Journal of Veterinary Diagnostic Investigation Vol. 18 Issue 5, 511-513
Copyright © 2006 by the American Association of Veterinary Laboratory Diagnosticians
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Brief Communication

Hepatic yersiniosis in a cougar (Felis concolor)

Michael A. Owston, Ching Ching. Wu and José A. Ramos-Vara1

Correspondence: 1Corresponding Author: Dr. José Ramos-Vara, Animal Disease Diagnostic Laboratory, Purdue University, 406 South University, West Lafayette, IN 47907

A cougar (Felis concolor) was diagnosed with hepatic yersiniosis by bacterial culture and histopathology. The animal had a 2-week history of anorexia and jaundice before its death. Grossly, the liver exhibited caseo-necrotic foci. Histopathologically, there was necrotizing and suppurative hepatitis, with large numbers of intralesional gram-negative coccobacilli. Additional hepatic lesions included central vein thrombosis, lymphoplasmacytic portal hepatitis, and capsulitis. Yersinia pseudotuberculosis coccobacilli were isolated in pure culture from the hepatic lesions. Because the hepatic lesions in this animal resemble those of other zoonotic diseases, such as plague and tularemia, veterinarians and laboratory personnel who handle samples should take adequate safety precautions. This report is the first to describe the pathology associated with hepatic yersiniosis in a cougar.

Key Words: Cougar • hepatitis • liver • pathology • Yersinia pseudotuberculosis




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S. Zhang, Z. Zhang, S. Liu, W. Bingham, and F. Wilson
Fatal yersiniosis in farmed deer caused by Yersinia pseudotuberculosis serotype O:3 encoding a mannosyltransferase-like protein WbyK
J Vet Diagn Invest, May 1, 2008; 20(3): 356 - 359.
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