Keep dangerous disease from following you home

While traveling can expose you to new ideas and people, it can also expose you to pathogenic bacteria. And unwary travelers may unknowingly facilitate the arrival of incurable disease to the U.S.

The problem, say researchers at the Helsinki University Hospital in Finland, is that when American, Finnish and other western travelers come home from other parts of the world and have contracted diarrhea, they take unnecessary antibiotics that are encouraging the growth of superbugs that resist pharmaceutical treatment.

The researchers say that antibiotics should only be used for severe cases of travelers’ diarrhea.

“The great majority of all cases of travelers’ diarrhea are mild and resolve on their own,” says rsearcher Anu Kantele.

The Finnish study showed that 21 percent of people who traveled to tropical and subtropical areas had contracted what are called spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae bacteria during their travel. (These bacteria are resistant bacteria that are increasingly becoming a difficult source of superbug infection.)

Overall, 37 percent of returning tourists who took antibiotics for their diarrhea were colonized with the superbug. And among people who went to South Asia and took antibiotics, 80 percent were infected with the bacteria.

“More than 300 million people visit these high-risk regions every year,” says Kantele. “If approximately 20 percent of them are colonized with the bugs, these are really huge numbers. This is a serious thing. The only positive thing is that the colonization is usually transient, lasting for around half a year.”

Kantele says that if you travel and get diarrhea, you should consume plenty of fluids to keep from getting dehydrated and use over-the-counter, non-antibiotic antidiarrheal treatments to alleviate symptoms, if necessary. If the diarrhea is severe (accompanied by a high fever, blood stools or significant dehydration), then you should seek professional medical help.

The researchers emphasize:

  • If you take antibiotics for travelers’ diarrhea, you have a greater risk for contracting ESBL-producing bacteria, a serious superbug that is a significant public health threat.
  • If you come home with ESBL-producing bacteria growing in your gut, you may unwittingly spread this superbug even if you don’t feel sick.
  • Travelers’ diarrhea is the most prevalent kind of illness that occurs when you travel internationally. But most diarrhea doesn’t need treatment and will cease fairly rapidly.
  • For more information about travelers’ diarrhea plus tips to prevent it, go to;

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Carl Lowe

By Carl Lowe

has written about health, fitness and nutrition for a wide range of publications including Prevention Magazine, Self Magazine and Time-Life Books. The author of more than a dozen books, he has been gluten-free since 2007.