Toxoplasmosis is caused by Toxoplasma gondii, an obligate intracellular protozoan that belongs to the Aplicomplexa phylum, coccidian subclass, and affects all warm-blooded animals. The role of opossums in the epidemiology of toxoplasmosis in Brazil is not fully understood, and there are very few descriptions of toxoplasmosis lesions in these animals. This report describes the anatomopathological, molecular and immunohistochemical findings of a case of encephalic toxoplasmosis in free-living white-eared possum (Didelphis albiventris).
