Parasitic Diseases, Trematodes (Flukes)

Animals Involved

Swine, people are definitive hosts; snails are intermediate hosts

Known Distributions

Asian pig­raising regions

Probable Means of Spreading

Ingestion of aquatic vegetables or contaminated drinking water containing metacercariae

Clinical Manifestations in People

Often asymptomatic; gastroenteritis; intestinal bleeding, obstruction, or perforation possible; facial, abdominal, extremity edema may occur

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