234 Ch 234. Amebiasis (Entamoeba histolytica)

Worldwide protozoan; 50M symptomatic + 40-100K deaths/yr; fecal-oral; most asymptomatic; symptomatic = colitis + flask-shaped colonic ulcers + amebic dysentery + amebic liver abscess (extra-intestinal #1); metronidazole + paromomycin sequential treatment; differentiate from non-pathogenic E. dispar + E. moshkovskyi。