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Medical Definition of Baylisascariasis
1. The disease caused by nematode parasites of the genus Baylisascaris; migrating larvae of the raccoon parasite B. Procyonis can cause a severe disease of the central nervous system in a variety of wild and domestic animal species and, rarely, in human beings; human disease has been manifested as either a fatal eosinophilic meningoencephalitis or a diffuse unilateral subacute neuroretinitis. (05 Mar 2000)