Parasitic Diseases, Trematodes (Flukes)

Animals Involved

Ruminants, especially sheep, goats, cattle, occasionally other domestic and wild mammals are definitive hosts; land snails (first) and ants (second) are intermediate hosts

Known Distributions

D dendriticum on all major continents (may be focal); D hospes in Africa south of Sahara desert

Probable Means of Spreading

Ingestion of infected ants

Clinical Manifestations in People

Abdominal discomfort, flatulent indigestion; occasionally GI signs (diarrhea, constipation, vomiting, pain); weight loss, fatigue; biliary obstruction, cholangitis, hepatomegaly, or acute urticaria possible

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