We had Hand, Foot and Mouth disease two summers ago at daycare and the carrier is a boy who never actually gets sick or shows symptoms so it wasn't his parent's fault that he brought it in. The next two children who caught it had extremely high fevers for a few days and the spots showed up on them. So I followed my fever and open sore policies as stated in my contract and they all ended up being out of daycare for just a few days. Except for the carrier boy who never gets a fever or anything bad. I wish we all had immune systems like that little guy!