Yep, I'm with the others. Get out as much as you can - great for your bubs and brilliant for you. I took my DD out from the day I took her home from hospital. What I didn't do though was allow her to be passed around too much, but that was as much because it overstimulated her and made her grumpy and harder to settle back at home as it was to avoid any viruses etc. She has managed to get to 5.5 months of age without being sick at all, so it certainly hasn't done her any harm.