[Traveler's diarrhea].

Travellers' diarrhea afflicts up to 50 percent of tourists in certain geographic regions. It is a syndrome caused by a variety of pathogens, the most common of which is enterotoxigenic E. coli. Other responsible pathogens include salmonellae, shigellae, Entamoeba histolytica, Yersinia enterocolitica, Giardia lamblia and virus-like agents, seldom vibrios. Symptoms persist for only a few days and are only serious in 1/5 of the cases.