Huh?
I'm headed off to México in 3 weeks with a professor of mine and a couple of other people and it seems that some of them are getting vaccinated just for that. I'd heard of the concept before, but I never would have put México on the list of places you need to seriously fear getting a lethal disease in. Which you can, like everywhere else. Already you can get the West Nile virus all the way up in Illinois. I don't know. It seems a little weird to me. I guess I'm used to knowing that that mosquito bite on my arm might possibly be infected with dengue (a nasty viral thing we have in Puerto Rico), but it’s so unlikely no one bothers worrying about it. I've never gotten it. I do know someone who got it three times, though, but that's just bad luck. In México, the only precaution anyone one in my family takes is not to drink the water. Because, oh, yeah, you can get some really horrendous stomach stuff through the water. Again, not in my case, but I wasn't the one who had the horchata (which is a delicious drink, but you might want to have someone prepare it in front of you.