Fascioliasis is a rare parasitic infection primarily of the hepatobiliary system caused by one of 2 digenean flatworms, Fasciola hepatica or Fasciola gigantica, which are commonly referred to as liver flukes. F.gigantica lives mainly in tropical climates while F. hepatica is found in temperate climates. They are parasites of many types of plant-eating animals and their larvae are found on aquatic vegetation.
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