Naegleria infection epidemiology and demographics

Naegleria fowleri is found worldwide. Most commonly, the amoeba is found in:

• Warm bodies of freshwater, such as lakes, rivers
• Geothermal water such as hot springs
• Warm water discharge from industrial plants
• Minimally chlorinated swimming pools
• Soil

Although Naegleria is commonly found in the environment, infection occurs rarely. Only 23 infections were documented in the U.S. between 1995 and 2004.

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