Fasciola hepatica

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A trematode, the common liver fluke, an economically important parasite of sheep and cattle that sometimes infects humans. The intermediate host is a freshwater snail from which are released cercariae which encyst as resting metacercariae on vegetation. When eaten, the larvae excyst and migrate through the intestinal wall to the liver where they mature and come to lie in the bile duct where they release eggs into the gut. Contamination of water with faeces leads to infection of snails, completing the life cycle. Fascioliasis (fasciolosis) is the disease caused by the fluke. Treatment is usually with triclabendazole, a benzimidazole anthelmintic drug.

Subjects: Medicine and Health.

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