The Diagnosis of Schistosoma Mansoni Infections

Note on the Use of a Rectal Scraper

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Summary and Conclusions

A rectal scraper is described which was found to be a satisfactory instrument for the collection of specimens of mucus and fecal material from the rectal wall and for their transportation from the field to the laboratory. The direct examination of material collected with a single-grooved scraper was found to be less efficient than the routine acid-Triton NE-ether method of stool concentration for the detection of Schistosoma mansoni eggs, although the scraper method detected a significant number of positives missed by the concentration technique. Further investigation of the scraper method is indicated. In its present state, the scraper technique may prove to be a useful complement to stool concentration methods in the diagnosis of S. mansoni infections and should be of value in situations where the collection of fecal specimens is impractical or facilities for stool concentration are lacking.

Author Notes

Major, MC, A.U.S.