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Robert Steffen, John J. Mathewson, Charles D. Ericsson, Herbert L. DuPont, Andrée Helminger, Timothy K. Balm, Knut Wolff, Felix Witassek, Travelers' Diarrhea in West Africa and Mexico: Fecal Transport Systems and Liquid Bismuth Subsalicylate for Self-Therapy, The Journal of Infectious Diseases, Volume 157, Issue 5, May 1988, Pages 1008–1013, https://doi.org/10.1093/infdis/157.5.1008
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Abstract
The goals of this study were threefold: to compare the etiology of travelers' diarrhea in West Africa and Mexico, to evaluate two fecal transport systems for the recovery of enteropathogens, and to verify the efficacy of liquid bismuth subsalicylate (BSS) in different locations and under different entrance criteria for disease severity. The study populations consisted of 133 European tourists in West Africa and 112 American students in Mexico who had suffered from travelers' diarrhea. In 60% and 38% of the stool samples at the two study sites, similar proportions of enteropathogens were detected. A two-vial system consisting of Enteric Plus medium and polyvinyl alcohol fixative was slightly superior for identifying enteric pathogens than was a three-vial system with buffered glycerol saline, Cary-Blair medium with campylobacter antibodies, and polyvinyl alcohol fixative. In a parallel, double-blind, randomized trial, BSS significantly shortened disease duration at both study sites.