Traveler's diarrhea can occur in both short and long term travelers; in general, there is no immunity against future attacks. Traveler's diarrhea appears to be most common in warmer climates, in areas of poor sanitation and lack of refrigeration.
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Recent studies have shown that approximately 25% of travelers develop TD in the first 2 weeks abroad, with the highest rates occurring in travel to Africa and South, Central and West Asia.
Water or an oral rehydration solution is best. Drink at least 1 cup (240 milliliters) of liquid every time you have a loose bowel movement. Eat small meals every few hours instead of three big meals. Eat some salty foods, such as pretzels, crackers, soup, and sports drinks.
Drinking milk, or ingesting other dairy products may make travelers' diarrhea worse. Alcohol and caffeine can also worsen symptoms. While you may not feel up to it, you still need to eat to keep up your strength. You should aim to eat smaller meals throughout the day, rather than three larger meals, though.
Travelers' diarrhea (TD) is the most predictable travel-related illness. Attack rates range from 30%–70% of travelers during a 2-week period, depending on the destination and season of travel.