Centers for Disease Control and Prevention
Centers for Disease Control: Parasites and Health: Amebiasis
A very comprehensive over view of the Entamoeba histolytica. Information includes geographic distribution, infection agents, symptoms and treatment.
Other
Utah Department of Health: Amebiasis (Amebic Dysentery) [Pdf]
Frequently asked questions about amebiasis, an intestinal illness caused by a parasite, "What is Amebiasis?", "Who gets Amebiasis?", symptoms and many other details of the illness are explained in detail.