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On the Prevalence of Carriers of Endamoeba Dysenteriae among Soldiers Returned from Overseas Service¹

Dysentery has long been known as one of the major horrors attendant upon war. Its effects are recorded not only in the roll of honor and the pension lists, but in reduced levels of health and resistance to disease of survivors and in widely spread foci of infection which follow in the wake of dispersing armies. This is especially true of the dysenteries and diarrheas of protozoan origin due to intestinal infections by Endamoeba dysenteriae, by the flagellates Giardia, Chilomastix and Trichomonas, and, to a less extent, by the ciliate Balantidium.

In contrast with the bacillary infections producing dysentery, the protozoan infections appear, in the light of our present knowledge, to be more persistent and to pass more readily into the carrier phase in which the host may apparently have normal health, though liable to relapses.

¹ Read at the New Orleans meeting, American Society of Tropical Medicine, April 26, 1920.