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Factors Influencing the Reported Incidence of Appendiceal Oxyuriasis

The presence of Oxyuris vermicularis within the lumen of the vermiform appendix was probably first described by Fabricius (1) in 1634. In recent years there have been many surveys published with marked variations in incidence. This discrepancy in results may be attributed to several variable factors. The literature (2) convincingly suggests a distinct geographic variation which in turn is probably due to such differences as personal habits, environmental conditions and climate. A second very significant variable factor is the age range covered in the different surveys. It is generally conceded that Oxyuris vermicularis infections are more frequent in children than in adults. Cecil and Bulkley (3) found Oxyuris in 15 per cent of 129 unselected appendices removed from individuals between the ages of 2 and 15 years. Botsford, Hudson and Chamberlain (4), in a review of 1,343 appendices removed from infants and children varying from 18 months to 12 years of age, report the parasites in 5.3 per cent.

Received March 20, 1942.