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Naegleriasis
Naegleriasis, also known as primary amoebic meningoencephalitis (PAM), amebic encephalitis, and naegleria infection, is an infection of the brain by the free-living protist ''Naegleria fowleri'', also known as the "brain-eating amoeba".
''N. fowleri'' is typically found in warm bodies of fresh water, such as ponds, lakes, rivers, and hot springs. It is also found in soil, poorly maintained municipal water supplies, hot water heaters, near warm-water discharges of industrial plants, and in poorly chlorinated, or unchlorinated swimming pools, in an amoeboid or temporary flagellate stage. There is no evidence of it living in salt water.
Although infection occurs rarely, it nearly always results in death, with a case fatality rate greater than 95%.〔Cetin N, Blackall D.Naegleria fowleri meningoencephalitis.Blood 2012 Apr 19;119(16):3658.PMID 22645743〕
==Signs and symptoms==
Onset symptoms of infection can start from one to seven days after exposure. Initial symptoms include changes in taste and smell, headache, fever, nausea, vomiting, and a stiff neck. Secondary symptoms include confusion, hallucinations, lack of attention, ataxia, and seizures. After the start of symptoms, the disease progresses rapidly over three to seven days, with death occurring usually from seven to fourteen days later,〔(【引用サイトリンク】title=CDC - 01 This Page Has Moved: CDC Parasites Naegleria )〕 although it can take longer. In 2013, a man in Taiwan died twenty five days after being infected by ''Naegleria fowleri''.〔Su MY, Lee MS,et al. A fatal case of Naegleria fowleri meningoencephalitis in Taiwan.Korean J Parasitol. 2013 Apr;51(2):203-6. doi: 10.3347/kjp.2013.51.2.203. Epub 2013 Apr 25. PMID 23710088〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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