Preferred definitive host:
Pigs, guinea pigs, rats, other mammals.
Most common in
Cecum and colon
Proteolytic enzymes digest the intestinal epithelium of the host. Ulcer is flask-shaped, and causes lymphocytic infiltration, hemorrhage, secondary bacterial infection. Large intestine and appendix may be perforated.
Carbarsone, diiodohydroxyquin, tetracycline. Epidemiological control and treatment are similar to those of E. histolytica.