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Enterobiasis among Patients in the Roanoke Veterans Adm. Hospital¹

Surveys conducted in mental institutions and on general population groups show high incidence of infection with Enterobius vermicularis. A survey was made in this hospital to determine the rate of infection among the patients caused by this nematode.

Examinations where made by sections on each Ward, to establish the incidence of infection of each group, with the exception of Ward I where all the patients were considered one group. In all, 1,460 patients were examined by NIH swabs (Hall's anal swab), of whom 176 were found to be infected with E. vermicularis. For a check, 349 patients with negative results were reexamined, but no additional case could be detected. Specimens were taken mornings at 8 o'clock.

The infection rate of 11.98 per cent in 1,460 patients examined is low as compared with results obtained by Cram of the National Institute of Health, who reported on incidence of 35 per cent in 600 persons of various general population groups in Washington, D. C., and Smith who found the unusually high infection rate of 65.15 per cent in an institution for mentally deficient.

¹ Published with the permission of the Chief Medical Director, Department of Medicine and Surgery, Veterans Administration, who assumes no responsibility for the opinions expressed or conclusion drawn by the author.

² Medical Technician, Clinical Laboratory, Veterans Administration Hospital, Roanoke 17, Virginia.