Originally Posted by Unregistered:
That's what upset me the most, too. I have that in my contract for a reason. My group is tiny and it's in my own home so I added it in my new contract that anything that's Highly Contagious they must come back with a doc's note and the sibling must stay home to try and stop the spread of the illness... I'm not worried about the common cold, allergies just the Highly Contagious stuff (croup, chicken pox..etc). Now because the siblings have been going back and forth for 2 weeks now with different illness and they are paying me and they aren't allowed to come the parents are getting upset. So, I gave in.. which I know is a backbone issue but it made me upset.. plus the dad told me that he knows its in my contract but they have no one else to watch the children to separate them so both can get better. 
Just remember, croup is no more highly contagious than a cold. It's just a virus that turns into croup in some kids and not the others.
I know yu are frustrated. Up the kids vitamin c...we usually buy several bags of cuties and let the kids eat as many as possible. It really helps. Some swear by that airborne stuff too