When my sis's kids were little they had it alot. Of course since my mom babysat I got it but my mom never did.

I've been lucky, my girl only had it once and since I knew what to look for from my sis's kids, I caught it right away and called the doc and got the good stuff for her.

I had a waitress at the bar I managed yeas ago and her daughter kept getting it no matter how vigil she was with the washing and combing, turned out the school nurse was passing it around.