Background. Travelers’ diarrhea (TD) is the most prevalent disorder affecting travelers to developing countries. Thailand is
considered ‘‘moderately risky’’ for TD acquisition, but the risk by city visited or behavior of the visitor has yet to be definitely
defined. Restaurant eating is consistently associated with the acquisition of diarrhea while traveling, and pathogen-free meals serve
as a marker of public health success. This study seeks to ascertain a traveler’s risk of exposure to certain bacterial gastric pathogens
while eating at Bangkok restaurants recommended in popular tourist guide books.