I think I had a stomach virus 16 years ago (although I didn't vomit) and have no idea where I got it. The last time I puked, it might have been a virus caught from my brother, who threw up a day and a half before I did. Or it might have been food poisoning from McDonald's. The time before that, I might have caught it from a girl at school who puked in class, but I don't remember. Doug