Daycare woes

I love daycare. It has been a blessing. I can take Bobby first thing in the morning and I know that he is being watched and cared for and fed and changed while I am working away trying to make enough money to keep us going for another month. Its great. Whats not great is that Bobby has been in daycare for just under a month and he is now on his 2nd cold. How do they transfer germs so quickly and easily? Daycare, I love you but I'm wondering if this is a healthy relationship.