Why is it always the daycare's fault when a kid gets sick?? Do parents not realize that it's just as likely that the kid got sick because they were licking the WalMart shopping cart handle? Or because they had a sleepover at Gramma's?
I also think that if mom is that worried, then multi-child care is not for that family. They need a nanny.
Yes, children get sick due to the other kids around. But over time, it's not that bad. The immune system builds up, and they don't get sick that often anymore.