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1 April 2013 Feline Infectious Peritonitis in a Mountain Lion (Puma concolor), California, USA
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Feline infectious peritonitis (FIP) is a fatal immune-mediated vasculitis of felids caused by a mutant form of a common feline enteric virus, feline enteric coronavirus. The virus can attack many organ systems and causes a broad range of signs, commonly including weight loss and fever. Regardless of presentation, FIP is ultimately fatal and often presents a diagnostic challenge. In May 2010, a malnourished young adult male mountain lion (Puma concolor) from Kern County, California, USA was euthanized because of concern for public safety, and a postmortem examination was performed. Gross necropsy and histopathologic examination revealed necrotizing, multifocal myocarditis; necrotizing, neutrophilic, and histiocytic myositis and vasculitis of the tunica muscularis layer of the small and large intestines; and embolic, multifocal, interstitial pneumonia. Feline coronavirus antigen was detected in both the heart and intestinal tissue by immunohistochemistry. A PCR for coronavirus performed on kidney tissue was positive, confirming a diagnosis of FIP. Although coronavirus infection has been documented in mountain lions by serology, this is the first confirmed report of FIP.
Nicole Stephenson, Pamela Swift, Robert B. Moeller, S. Joy Worth and Janet Foley "Feline Infectious Peritonitis in a Mountain Lion (Puma concolor), California, USA," Journal of Wildlife Diseases 49(2), (1 April 2013).
Received: 13 August 2012; Accepted: 1 October 2012; Published: 1 April 2013

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