Results of Fecal Examinations for Parasitic Infection in Employees of Okayama Factory of Kurashiki Rayon Manufacturing Company

A complets survey for intestinal helminthes was undertaken of the employees of the Okayama factory of the Kurashiki Rayon Manufacturing Company by direct smear method during a period of four years from 1952 through 1955. The helminthes found include Ascaris lumbricoides, Ancylostoma duodenale, Tricuris trichiura and Enterobius vermicularis. The incidence of intestinal helminthiasis showed an yearly decline from the peak in 1952. However, because of the high incidence among the new employees the annual decline of the total is gradual.