I called and talked to my friend (the mom of the little boy in the hospital). From what she told me, it sounds like he started out with what Nora had, but it got a lot worse. It is so bad that they were flown from one hospital to another. He is now having to be on oxygen because he's developed pneumonia and RSV on top of whatever the other "bug" is. The pediatric specialist didn't know what it was, so the infectious disease specialist is going to look at him tomorrow.
I apologized profusely to her and told her that I never would have brought Nora to playgroup had I known her "cold" was actually the beginning of something a lot more serious. She had it and then got over it so quickly that I didn't even worry about it. (Most likely something like roseola). This little guy is swollen from head to toe in a rash and can't even open his eyes.
The only common place they have been was in the church nursery. We are betting that the toys have never been cleaned there, so I'm going to go tomorrow armed with some Clorox and wipe everything down. *sigh*