<unk>  <unk> , is a disease of the central nervous system.<unk>  is caused by Naegleria fowleri, a free-living ameba. It is a rare disease that is almost always fatal; only one person in the U.S. out of 128 has survived infection from 1962 to 2012. Signs and symptoms of Naegleria fowleri infection are clinically similar to bacterial meningitis, which lowers the chances of initially diagnosing<unk> . Humans become infected when water containing Naegleria fowleri enters the nose and the ameba migrates to the brain along the olfactory nerve. People do not become infected from drinking contaminated water. Symptoms start 1-7 days (median 5 days) after swimming exposure and people die 1-12 days (median 5.3 days) after symptoms begin.
Primary amoebic meningoencephalitis
Granulomatous amoebic encephalitis
Fungal meningitis
Eastern equine encephalitis
Japanese encephalitis
Rasmussen's encephalitis
Herpes simplex encephalitis
La Crosse encephalitis