The causative agent of Primary Amoebic Meningoencephalitis is:

(C) Naegleria fowleri # Human infection of naegleria comes from water containing the amoebae and usually follows swimming or diving in ponds.> Patients are mostly previously healthy young adults and children.> The amoebae invade the nasal mucosa, pass through the olfactory nerve and initiate an acute meningitis and encephalitis (primary amoebic meningoencephalitis).