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Ten bizarre travel diseases that can ruin your next vacation
The reality is, you never know what you might be susceptible to. In my case, my doctors and medical research indicate that I may be lacking an enzyme that made me vulnerable to an extremely rare but serious tropical disease caused by the bacteria Bartonella bacilliformis, which causes Oroya Fever (and its precursor, Verruga Peruana). I'm still recovering from a three-year battle with the disease that has resulted in permanent organ damage because of a failure to protect myself against sand flies in the Amazon Basin region of Ecuador. Regular applications of DEET could have prevented that, as well as the various misdiagnoses of tuberculosis, histoplasmosis, and Hodgkin's lymphoma, but that's another story.
A lot of tropical and uncommon travel-related ailments are difficult to diagnose, and sometimes even more problematic to cure (if they don't kill you, first). Statistically, however, most travelers--even if they're in extremely sketchy parts of the world--will stay healthy if they take the necessary precautions. Having a trustworthy travel doctor is also helpful if you spend a lot of time in developing nations.
Being prepared before you leave home is key. You should never take travel wellness lightly, but don't let fear ruin your trip. I certainly don't follow every bit of medical advice out there (I honestly don't see the point of traveling if not to eat epic quantities of street food.). If you're going to be completely paranoid and don't own a Hazmat suit, perhaps it's better to stay home. But don't ignore CDC warnings for recommended (or required) vaccinations, and if you know you're going to be in a malarial or otherwise-dangerous insect-or-disease-inhabited region, prepare accordingly.
Just remember to do your research before you go, and remember that while it most likely won't happen to you, it's not impossible.
After the video (graphic, but it illustrates just how devastating TB can be, as well as provides important information on Multidrug-Resistant Tuberculosis), a gallery of bizarre diseases you'll want to avoid during your travels.