Larval Echinococcus multilocularis was found in a nutria (Myocastor coypus) on a fur farm situated south of the Thuringian Forest near the border the Federal Republic of Germany. This finding is of epidemiological importance. Investigations of 67 red foxes (Vulpes vulpes) originating from this area and the whole Erfurt Region (Thuringia) did not reveal the presence of adult E. multilocularis.