Study suggests vaccine against traveler's diarrhea is possible

An experimental vaccine provided some protection against that scourge of tourism, traveler's diarrhea, when put to a rigorous test among U.S. students in Mexico and Guatemala, scientists reported Friday.

The research provides important evidence that a &to=http://english.pravda.ru/culture/2001/09/18/' target=_blank>vaccine is possible against the hard-to-avoid germs, instead of merely urging travelers to guard against risky food and water. Now the challenge is to strengthen that protection.

"This is a very encouraging first step," said microbiologist A. Louis Bourgeois of Johns Hopkins University's Bloomberg School of Public Health, who led the study of the Swedish-developed vaccine.