Entamoeba polecki as a cause of human infection

Abstract

Entamoeba polecki occurs worldwide, but symptomatic infection in humans is rare. It has been implicated in cases of diarrhoea and abdominal pain. Transmission probably results from transfer of cysts excreted by pigs or monkeys. As the trophozoite of E. polecki closely resembles those of E. coli and E. histolytica differentiation is difficult: the presence of mature cysts is required for laboratory diagnosis of E. polecki. This infestation has been documented for more than half of a century with most of the cases being reported from developing countries. However, the presence of sporadic cases all over the world, including developed countries, confirms the feasibility of zoonotic transmission of the parasite. Control of this newly emerging zoonosis is necessary; although one who carries E. polecki may not necessarily have symptoms, treatment to get rid off this possible pathogenic protozoa is necessary. The recommended antiparasitic drug for the E. polecki infestation is metronidazole.