Fasciola hepatica

**Definition:** A species of helminth commonly called the sheep liver fluke. It occurs in the biliary passages, liver, and gallbladder during various stages of development. Snails and aquatic vegetation are the intermediate hosts. Occasionally seen in man, it is most common in sheep and cattle.

**Tree numbers:** - B01.050.500.500.736.715.408.380.420

**Synonyms:** - Liver Fluke