Entamoeba coli is extremely common in the human colon. It is not to be confused with the (much smaller) bacterium Escherichia coli on which it probably feeds. It is harmless to us, unlike its near relative Entamoeba histolytica, which destroys the cells lining the colon and causes amoebic dysentery, familiarly known (in British English) as Delhi Belly, or (in American English) as Montezuma’s Revenge.
