Naegleria fowleri

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Human and animal [1]

Naegleria fowleri infects people by entering the body through the nose.[2] Person-to-person transmission is very rare.

1-7 days[2]

In the summer of 2007, 6 fatal cases of infection occurred in the United States, all young males[3]

The risk of Naegleria fowleri infection is very low. There have been 32 reported infections in the U.S. in the 10 years from 2001 to 2010.[2]

Duration of Infectiousness and disease



Asymptomatic Rates

Excretion Rates (see Exposure)


A microscopic ameba (single-celled living organism) that can cause a very rare, but severe, infection of the brain. Only one species (type) of Naegleria infects people: Naegleria fowleri.[2]


  1. Wiki
  2. 2.0 2.1 2.2 2.3 CDC
  3. Medscape