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Examination of fecal specimens from 79 natives living in a tropical region of the Sudan revealed that 67 per cent of the people were infected with Endamoeba histolytica ("small" and "large" races), one per cent with Dientamoeba fragilis, 5 per cent with Entermonas hominis, and there was one infection with Isospora. Eggs of Ancylostoma and Trichostronglyus were recorded in 3 per cent and 2 per cent, respectively, of stools examined. Ascaris was absent although conditions for its propagation seemed favorable. There was a single case of infection with Trichuris and one with Hymenolepis. Eggs of Schistosoma mansoni were detected in 10 per cent of the stools.
The senior author wishes to express his appreciation to Dr. J. F. E. Bloss, Director, Medical Services of Ministry of Health, Khartoum, Sudan, who kindly provided data for compilation of parasite incidence given in Table 2 and to Dr. J. R. Lauder, Director of the Wau Civil Hospital, who gave assistance in collection of materials.
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 views of the Department of the Navy or the naval service at large.
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