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Fasciola hepatica

Fasciola hepatica (Linnaeus, 1758) is a parasite of sheep and cattle causing liver disease. It is also found in various species of domesticated and wild herbivores. Furthermore, human cases have been increasing in 51 countries on five continents, and major human health problems occur in Andean countries (Bolivia, Peru, Chile, Ecuador), the Caribbean (Cuba), Northern Africa (Egypt), the Near East (Iran and neighbouring countries) and western Europe (France, Spain and Portugal).[1]

Distribution

Europe, Africa, Asia, the Americas and Oceania.

Parasitology

Pale grey with dark borders, it measures 20–50 6–13 mm. The anterior extremity is narrow, containing the oral sucker; the ventral sucker is larger than the oral and situated about 3 mm from the anterior extremity. Branched intestinal caeca with diverticula are present. The ovary is racemose, placed anterior to the testes in the posterior end of the body. The uterus is short and anterior to the ovary. An exsertile cirrus is …