Volume 11, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The incidence of intestinal protozoa and helminths in a total of 1089 persons (mixed ages, backgrounds, localities, ethnic groups, etc.) in the Colony of British North Borneo was determined by examination of a single stool specimen by the direct smear (MIF) and the MIFC concentration techniques. Overall prevalences for the protozoa were much less than expected in an area where epidemiological conditions appeared to favor parasitization. occurred in only 0 to 3% of seven groups of people, indicating that amebiasis may not necessarily be a disease of great concern in all populations of the tropics. Other protozoa also occurred in limited numbers, , 0 to 12%; , 4 to 30%; , 2 to 12%; and , 0 to 2%. and occurred in 3 to 16 and 0 to 1% respectively of the people examined.

Hookworm (27 to 72%), (13 to 74%), and (41 to 89%) infections were commensurate with epidemiological conditions in the area, but was not recorded. and were rare and occurred only in Chinese who probably acquired infections outside Borneo. Several persons passed eggs of heterophyid and unidentified trematodes.


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