Table 3.

Summative Description of Naegleria fowleri Compared With Similar Amoeba Infection[1,4]

Items	Naegleria fowleri	Acanthamoeba sp.
1. Pathologic presentation	Presented as PAM, usually acute	Presented as granulomatous amoebic encephalitis or keratitis, usually subacute
2. Background	History of water exposure	Impaired immunity
3. Organism morphology	10–15 mcg trophozoite with nonprominent karyosome	25–35 mcg trophozoite with prominent karyosome