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Intestinal Parasites in an Egyptian Village of the Nile Valley with Emphasis on the Protozoa¹

The incidence of intestinal parasites, with emphasis on the protozoa, in a small sample of the agricultural population of the Nile valley in Egypt was determined by study of stool specimens. A single specimen was taken on 6 separate surveys over a period of 2 years. Figures for incidence of the protozoa and most of the helminths are unusually high. Entamoeba histolytica, E. coli and Endolimax nana occurred in 97, 98 and 93 per cent of specimens respectively. Enteromonas hominis, a protozoan frequently overlooked, was detected in 74 per cent. Fourteen per cent of the people had the small race of E. histolytica alone, whereas only 3 per cent were infected with the large race alone. Hookworm and Trichostrongylus eggs were found in 71 and 70 per cent respectively of specimens examined, Ascaris in 51 per cent and Enterobius vermicularis in 59 per cent. Such a high incidence of infection reflects the living conditions of the people from whom the material for examination was obtained.

¹ The opinions or assertions contained herein are the private ones of the authors and are not to be construed as official or reflecting the view of the Department of the Navy or the naval service at large.

This is one of a series of reports on surveys of intestinal parasites of man in Egypt and the Middle East, made while the authors were serving as members of the staff of the Department of Parasitology, U. S. Naval Medical Research Unit, No. 3 Cairo, Egypt.

The authors are indebted to Captain J. J. Sapero, MC, USN who initiated this study and to Abdel Aziz Salah, MANRU-3 for assistance in field collections.