Case Report Data & Graphs

Number of Case Reports of Primary Amebic Meningoencephalitis by Year — United States, 1962-2020

N=151; Year of exposure unknown for one case

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Case Reports by Year excel icon[XLS – 14 KB]

Number of Case Reports of Primary Amebic Meningoencephalitis by Age Group and Gender — United States, 1962-2020

N=151; median age=12; 76.2% male

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Case Reports by Age Group and Gender excel icon[XLS – 19 KB]

Number of Case Reports of Primary Amebic Meningoencephalitis, by Month of Illness Onset and Probable Water Exposure — United States, 1962–2020

N=140
*Recreational water contained in a manufactured setting that has undergone a systematic disinfection process (e.g., chlorination and filtration). This includes water in swimming or wading pools, fountains, spas, and artificial whitewater venues.
** Water was forced up the nose during use.
Month of illness onset unknown for 11 cases. Of those case-reports missing the month of exposure, probable water exposures included lake, pond, reservoir (N =5), unknown/multiple (N=5), and geothermal water (N=1)

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Case Reports by Month of Illness Onset and Probable Water Exposure excel icon[XLS – 20 KB]