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Babesiosis is a malaria-like parasitic disease caused by infection with ''Babesia'', a genus of protozoal piroplasms. Human babesiosis is an uncommon but emerging disease in the Northeastern and Midwestern United States and parts of Europe, and sporadic throughout the rest of the world. It occurs in warm months. Ticks transmit the human strain of babesiosis, so it often presents with other tick-borne illnesses such as Lyme disease.〔 After trypanosomes, ''Babesia'' is thought to be the second-most common blood parasite of mammals, and they can have a major impact on health of domestic animals in areas without severe winters. In cattle, a major host, the disease is known as Texas cattle fever, redwater, or piroplasmosis. ==Classification== ''Babesia'' species are in the phylum Apicomplexa, which also has the protozoan parasites that cause malaria, toxoplasmosis, and cryptosporidiosis.〔 Four clades of ''Babesia'' species infect humans. The main species in each clade are: #''B. microti'' (<3 µm) #''B. duncani'', related to babesia of dogs #''B. divergens'' (cattle parasite seen mostly in Europe) and ''B. venatorum'' (roe deer parasite, formerly called EU1), most closely related to the large babesia clade #Large'' Babesia'' (>3 µm) mostly infects ungulates, but also includes K01 strain (an isolated case observed in South Korea, see isolated cases) 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「Babesiosis」の詳細全文を読む スポンサード リンク
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