Assertion: echinoderm's larva | /r/Causes | elephantiasis
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text: A large phylum of worms, often called round worms or thread worms; free living in soil or water, with many parasitic forms on plants and animals, including hookworms (Necator & Ancylostoma), pinworms (Enterobius), human ascaris Ascaris lumbricoides and trichinosis worm Trichinella; hookworm larvae burrow into the skin between the toes and eventualy migrate into the intestines; the disease trichinosis is caused by eating undercooked meat (especially pork) containing microscopic cysts of larval Trichinella spiralis; if ingested the larval cysts can eventually migrate into skeletal muscle tissue; elephantiasis is caused by minute filarial worms of the genus Wuchereria that invade lymphatic vessels; the filarial worms obstruct the flow of lyphatic fluids causing body extremities to swell to gargantuan proportions; microscopic filarial larvae causing elephantiasis are spread by blood-sucking female mosquitoes; other dreaded parasitic worms in the phylum include the Guinea worm (Dracunculus medinensis) and the giant kidney worm (Dioctophyma renale).