Amoebiasis,also known as amoebic dysentery,is caused by Entamoeba histolytica. Its trophozites, that penetrate the wall of the intestine secrete histolytic enzymes and feed upon its cells causing the formation of ulcers. The trophozoites under certain cirumstances reach the liver and brain also causes abscess formations.Transmissions of the parasites from man to man takes place through tetranucleate cysts.The trophozoites changes into a smaller minuta cyst.Amoebic dysenteries is endemic in warm countries.These cysts are foivoided with the faecal matter and contaminate food and water and spread into new hosts.
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