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Disseminated Toxoplasmosis In A Captive Koala (Phascolarctos Cinereus)

J. P. Dubey, M.V.Sc., Ph.D., Olaf Hedstrom, D.V.M., Ph.D., Craig R. Machado, D.V.M., and Kent G. Osborn, D.V.M.

ABSTRACT

Toxoplasma gondii was found in the heart, brain, liver, spleen, lymph nodes, urinary bladder, kidney, and adrenal glands of a captive adult female koala (Phascolarctos cinereus) that died at the San Francisco Zoo. Predominant lesions were encephalitis, myocarditis, and necrosis of the pancreas and adrenal glands. Organisms were identified as T. gondii on the basis of tissue cyst morphology.