I tried so hard, cleaning using antibacterial wipes, even limiting us going to public places when I was due for my second son (it was right at the height of h1n1). I did everything possible, and wouldn't you know it my son got sick the day I brought my 2nd son home. I was devastated.
I remember calling my MOm and crying that I did everything I could etc etc. She started laughing and said "its only a cold honey"...Then of course I went on "how do we know etc etc etc". Yikes, postpartum hormones at their best!
I didn't feel comfortable just sending my 1st son away to G&G's alone (he was only 21 months old). I didn't want him to feel like I was shipping him out and bringing in the new one. So instead of my husband staying home and helping me with the baby, I made him take my 1st son to his parent's house until he stopped sneezing and profusely coughing (majority of how things spread in our house)!
It ended up working out great. I was slightly nervous staying home by myself with the baby, but had neighbors if I needed anything. And I got some much needed one on one time with him, and some zzz's I wouldn't have gotten with the 1st home!
I'm sure everything will work out, but if not sure hope you find something that works for your family! Congratulations on your soon to be new addition!