What is amebiasis?

Amebiasis is a disease caused by a one-celled parasite called Entamoeba histolytica (ent-a-ME-ba his-to-LI-ti-ka).

Who is at risk for amebiasis?

Although anyone can have this disease, it is most common in people who live in developing countries that have poor sanitary conditions. In the United States, amebiasis is most often found
in immigrants from developing countries. It also is found in people who have traveled to developing countries and in people who live in institutions that have poor sanitary conditions. Men who have sex with men can become infected and can get sick from the infection, but they often do not have symptoms.

How can I become infected with E. histolytica?

• By putting anything into your mouth that has touched the stool of a person who is infected with E. histolytica.
• By swallowing something, such as water or food, that is contaminated with E. histolytica.
• By touching and bringing to your mouth cysts (eggs) picked up from surfaces that are contaminated with E. histolytica.