...Infection occurs mainly through the oral ingestion of eggs attached to dog hair, but the oncotic larvae hatch in the upper part of the small intestine and penetrate the intestinal wall, forming hydatids in various organs such as the liver, lungs, and brain, which can cause fatal damage to humans (hydatid disease). Hymenolepis nana and H. diminuta are originally parasites of mice, but they can also infect humans, especially children. In some cases, infection occurs through the ingestion of cysts (a type of cyst) in intermediate hosts such as fleas and maize weevils, or through the direct ingestion of eggs, and in some cases, autoinfection can also occur. *Some of the terminology that mentions "Hymenolepis nana" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…主としてイヌの体毛に付着した虫卵を経口摂取して感染するが,六鉤幼虫は小腸上部で孵化して腸壁に穿入(せんにゆう)し,肝臓,肺,脳などいろいろな臓器組織に至って包虫を形成し,ヒトに致命的な害(包虫症)を与える。またコガタジョウチュウHymenolepis nanaやシュクショウジョウチュウH.diminutaは,本来ネズミの寄生虫であるが,ヒトにも感染し,とくに子どもに多い。これには,ノミやコクゾウムシなどの中間宿主体内の擬囊尾虫(囊虫の一型)の摂取または虫卵の直接摂取により感染する場合があり,さらに,自家感染もある。… ※「Hymenolepis nana」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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