Parasitic Diseases, Trematodes (Flukes)

Animals Involved

Cats, dogs, rodents, pigs, other mammals; birds, including poultry, are definitive hosts; fish, shellfish, tadpoles, snails are intermediate hosts

Known Distributions

Most human cases in Asia, Western Pacific; this group of parasites is widely distributed,
including Europe, Americas, Middle East

Probable Means of Spreading

Ingestion of undercooked fish, shellfish, snails, or amphibians (frogs)

Clinical Manifestations in People

Abdominal discomfort; diarrhea, especially in heavy infestation; malnutrition, anemia, edema may occur, especially in children; intestinal perforation has been reported

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