Animals Involved
Cats, dogs, foxes, wolves, cattle, other mammals, fisheating birds are definitive hosts (host varies with species of parasite); fish (and snails) are intermediate hosts
Known Distributions
Middle East (especially Nile delta), Turkey, Asia
Probable Means of Spreading
Ingestion of undercooked fish containing encysted larvae
Clinical Manifestations in People
Diarrhea with mucus, colicky pain; heart or CNS involvement possible; severity of signs may vary with species