> You can get sick even from washing your teeth with tap water. Sick as in ruin your vacation, not sick as in really sick.
I mean, I'd call HAV "really sick". Even for people who clear the infection without assistance and no long-term complications, it's rather involved and goes far beyond simply "ruin your vacation".
Not HAV but other stuff that's prevalent and they're quite immune to it while westeners are not. Of course you can also get HAV as well if you aren't careful.
