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特許 権利維持 Helminthiasis /ˌhɛlminˈθaɪəsis/ (alternatively spelled helminthosis; plural helminthiases), also known as helminth infection or worm infection, is any macroparasitic disease of humans and other animals in which a part of the body is infected with parasitic worms (helminths). These parasites are broadly classified into tapeworms, flukes, and roundworms. They often live in the gastrointestinal tract of their hosts, but may also burrow into other organs, where they induce physiological damage. They remain the major cause of wildlife diseases, economic crises in the livestock industry, and human socio-economic problems in developing countries.