I'm sure that there are legitimate illnesses that are contracted while traveling, however, after 20+ years of traveling to resort destinations, I can't name one time that I wasn't at fault for feeling poorly.
Overeating, overexposure to sun, overindulging in liquor, and lack of water does this to anyone. I just hope that some of the posters who report these "horrible outbreaks" at particular resorts didn't have a three-egg omlet, sausage, bacon and sweet rolls for breakfast followed by eight hours of sun on their unprepared skin while guzzling sticky sweet drinks (double shots, of course, to get their money's worth), stopping only to consume a heaping plate full of nachos, french fries, and pizza for lunch. And it's not even dinner time yet.
My point? If your body is not accustom (?sp) to this on a daily basis at home, how can you expect it to NOT retaliate? Just be sensible and think moderation. Do you really want your most vivid vacation memory to be gazing at a beautiful sunset at the end of a glorious day in paradise, or gazing into your toilet?
This post is not meant to cause an uproar, just something to consider.
Happy and healthy travels to all-just shy of two weeks for our group's trip, and yes, I'm guilty of all of the above at one time or another.