Animals Involved
Dogs, foxes and other canids, cats, raccoons, muskrats, mink, other fisheating mammals are definitive hosts; fish (and snails) are intermediate hosts
Known Distributions
North America; human infection rare
Probable Means of Spreading
Ingestion of undercooked freshwater fish containing encysted larvae
Clinical Manifestations in People
Fever, abdominal pain (mainly epigastric), anorexia during acute stage; effects of chronic infection uncertain