The result of the examination for the eggs of intestinal parasites found in the feces of micronesian children (aged under 5 years) in Saipan

摘要

The author has been engaged for 10 years in investigation of diseases among the natives in Saipan and has found that several intestinal parasites prevail among the old or young natives. From January 1935 to March 1936, he examined for the eggs of parasites in the feces 332 children that were under 5 years of age. The results are summarized as follows: 1. In spite of the authoru27s endeavor, no eggs of parasites could be found in the feces of infants aged under 4 months. The eggs of ascaris lumbricoides are first found in the feces of male infants aged 5 months or in female infants 6 months old. The eggs of trichocephalus dispar are first found in the feces of male infants aged 6 months or 8 months old female infants. The eggs of ankylostoma duodenale are first found in the feces of the male infants aged 6 months. 2. The species of eggs of intestinal parasites, which are found in the feces of children aged from 5 months to 5 years, are ascaris lumbricoides (68.89%), ankylostoma duodenale (10%), tricocephalus dispar (58.52%), oxyuris (1.67%) and tenia nana (0.36%). In addition to these eggs, the author found some children to harbour filaria and trichomonas in their feces. The rate of infection with parasites referring to months or years of children is shown in the following table. 3. There are many individuals aged under 5 years bearing different kinds of parasites. The bearer that has 2 kinds of parasites (ascaris and tricocephalus) is seen most generally, showing a percentage of 38.46%. According to the advance of the age of individual, the number of one kind bearer (ascaris) decreases, on the contrary, the number of two kinds bearers (ascaris and tricocephalus) increases. 4. The illness of 109 children (42.48%) among 233 bearers of parasites was caused merely by the parasites. For instance; ascaridiasis 49 cases, ankylostomiasis 7 cases, oxyuris vermicularis 2 cases, Asthma bronchiale caused by the infection of ascaris lumbricoides 51 cases. 5. The abdomens of native children seem to be saliated as the result of p