Echinococcus Oligarthus
''Echinococcus'' is a genus within Cestoda, a parasitic class of the Flatworm, platyhelminthes phylum (colloquially known as flatworms). Human echinococcosis is an infectious disease caused by the following species: ''Echinococcus granulosus, E. granulosus'', ''Echinococcus multilocularis, E. multilocularis'', ''Echinococcus vogeli, E. vogeli'' or ''Echinococcus oligarthus, E. oligarthrus''. ''Echinococcus'' is triploblastic – it has three layers – outermost ectoderm, middle mesoderm, and inner endoderm. An anus is absent, and it has no digestive system. Its body is covered by tegument (helminth), tegument and the worm is divided into a scolex, a short neck, and three to six proglottids. Its body shape is ribbon-like. In humans, ''Echinococcus'' spp. cause a disease called echinococcosis. The three types of echinococcosis are cystic echinococcosis caused by ''E. granulosus'', alveolar echinococcosis caused by ''E. multilocularis'', and polycystic echinococcosis caused by ...
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