Entamoeba bangladeshi is a single-celled parasitic organism that can cause diarrhea in humans. It was first identified in 2012 in Bangladesh and has since been found in other countries in Asia. Symptoms of infection include abdominal pain, cramping, and diarrhea, which can sometimes be bloody. Treatment typically involves prescription medications, such as metronidazole or tinidazole, to kill the parasite. Prevention measures include practicing good hygiene, such as washing hands frequently and thoroughly, and avoiding contaminated food and water.