<prompt> Acute primary meningoencephalitis true is -Meningitis caused by Acanthamoeba species is acute in natureDiagnosis is done by demonstration of trophozoites in CSFCaused by feco-oral transmissionMore common in tropical climate  <response>: Option 1, 2,3 Naegleria Fowleri: Disease: Primary amebic meningoencephalitis PAM. Infective form: Amoeboid form is the invasive form. Mode of transmission: Man acquire infection by nasal contamination during swimming in fresh hot water bodies like ponds, river, swimming pools or lakes. option 4 Acanthamoeba species are more common in tropical climate 