How is amebic dysentery transmitted through contaminated food or water?

Amebic dysentery is caused by the protozoan Entamoeba histolytica. The disease is transmitted through the ingestion of food or water that has been contaminated by the feces of a human carrier of the infective organism.12

Transmission occurs primarily through the following routes:
* Direct Contamination: Infected individuals who handle food with unwashed hands can spread the parasite.2
* Environmental Contamination: The parasite is often spread in areas where people are crowded together and have access only to primitive sanitary facilities, leading to the contamination of food and water supplies.2
* Vectors: Encysted E. histolytica can be transmitted via fly and cockroach droppings, which may contaminate food and water sources.1

The parasite enters the digestive tract through the mouth and lodges in the large intestine. Because carriers may show no symptoms, they can unknowingly spread the disease. Control of the disease relies on boiling drinking water and ensuring the adequate disposal of human waste to prevent the contamination of food.32