aqua,
Ya lor, steph and pixie know who's the mystery preggy mum on FB. I went to kaypoh still no clue
steph,
I agree with Pixie that once the kid goes to cc, they have more chance to get contact with virus/bugs. But then like I said, it can be everywhere, not only the cc. Like when you MIL/FIL came back from marketing, visiting a friend, etc. A healthy person carries viruses around too, but cos his immunity is strong, so the virus can make him sick, but he can pass on the virus and make others sick.
Yes lor, built up their immunity bah. But I don't believe in supplement. So for me it's healthy diet (lots of fruits!), drink lots of water, and head outdoor as much as possible.
For cleaning the mattress, you may want to consider investing a system like the Delphin. We saw the demonstration (it's free), and it's pretty impressive as in you can see how much dust mite it can suck out from your mattress, and it serves as air purifier at the same time. Not cheap. We were considering, but at the end we didn't get it since our kids don't have respiratory problem (touch wood). Babyship got it (I read from her blog
http://babyship.blogspot.com/2010/05/delfin.html), and you can ask her for feedback, now that she has used it for several months.