Traveler's Diarrhea in Athletes.

In brief: Traveler's diarrhea is a common and troublesome feature of life for international athletes. About 30% to 60% of traveling groups that have been studied are affected with diarrhea. The most common pathogen is enterotoxigenic Escherichia coli. Recent experience confirms that doxycycline provides effective prophylaxis against enterotoxigenic E coli infection in many locales. Treatment is aimed at reducing discomfort, increasing stool consistency, and reducing stool frequency.