Toxoplasmic encephalitis in a free-ranging Rocky Mountain bighorn sheep from Washington |
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| Authors: | Baszler T V Dubey J P Löhr C V Foreyt W J |
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| Institution: | Department of Veterinary Microbiology and Pathology, Washington State University, Pullman 99164-7040, USA. baszlert@vetmed.wsu.edu |
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| Abstract: | A 4-mo-old free-ranging Rocky Mountain bighorn sheep (Ovis canadensis canadensis) from the Hells Canyon area (Washington, USA) was diagnosed with encephalitis associated with Toxoplasma gondii infection. The sheep had concurrent pneumonic pasteurellosis and resided in a geographic area with endemic Pasteurella-associated pneumonia and mortality in bighorn sheep. The brain had multifocal necrotizing and nonsuppurative encephalitis with intralesional protozoa. The protozoa were identified as T. gondii by immunohistochemistry. To our knowledge, this is the first report of T. gondii infection in a Rocky Mountain bighorn sheep. |
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