Thanks Playfelt...I wasn't sure if what I did was the right thing, but I was watching the younger one like a hawk for any symptoms and today when he seemed to be losing his voice I sent him straight home (he had only been here for an hour) whereas when the older one started to lose his voice I thought it was just a bad cold and didn't call home until he woke up for his nap wheezing and ahving difficulty breathing (very scary). Now all the kids, every single one, has a bad cold and cough, but I am watching all of them for symptoms that show it more than a cold (fever, loss of voice, wheezing, barking cough)...so far so good...fingers crossed nobody gets croup.