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''Leptospira'' (Greek ''leptos'', "fine, thin" and Latin ''spira'', "coil") is a genus of spirochaete bacteria, including a small number of pathogenic and saprophytic species. ''Leptospira'' was first observed in 1907 in kidney tissue slices of a leptospirosis victim who was described as having died of "yellow fever." ==Taxonomy== ''Leptospira'', together with the genera ''Leptonema'' and ''Turneria'', is a member of the family Leptospiraceae. The genus ''Leptospira'' is divided into 20 species based on DNA hybridization studies. Pathogenic ''Leptospira'' :''Leptospira interrogans'' :''Leptospira kirschneri'' :''Leptospira noguchii'' :''Leptospira alexanderi'' :''Leptospira weilii'' :''Leptospira'' genomospecies 1 (''alstoni'') :''Leptospira borgpetersenii'' :''Leptospira santarosai'' :''Leptospira kmetyi'' Intermediates or opportunistic ''Leptospira'' :''Leptospira inadai'' :''Leptospira fainei'' :''Leptospira broomii'' :''Leptospira licerasiae'' :''Leptospira wolffii'' Non-pathogenic ''Leptospira'' :''Leptospira biflexa'' :''Leptospira meyeri'' :''Leptospira wolbachii'' :''Leptospira'' genomospecies 3 (''vanthielii'') :''Leptospira'' genomospecies 4 (''terpstrae'') :''Leptospira'' genomospecies 5 (''yanagawae'') Members of ''Leptospira'' are also grouped into serovars according to their antigenic relatedness. There are currently over 200 recognized serovars. A few serovars are found in more than one species of ''Leptospira''. At its 2002 meeting, the Committee on the Taxonomy of Leptospira of the International Union of Microbiological Societies approved the following nomenclature for serovars of Leptospira. Genus and species must of course be italicized, with the serovar name not italicized and with an upper case first letter. :''Genus species'' serovar Serovar_name For example: *''Leptospira interrogans'' serovar Australis *''Leptospira biflexa'' serovar Patoc 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Leptospira」の詳細全文を読む スポンサード リンク
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