I would like to know the same thing I'm due 1-28-14 and I was complaining to my gma about not being able to take the baby out because of all that and she told me " your father was born January 12th and I took him out everywhere and he was just fine" and I have to say it's true lol. But I really don't know some people suggest not taking them out until flu season is over but that's a long time.
I've been taking my son out almost daily since he was a newborn. I live in Scotland so its pretty cold here and he's been fine. Just make sure clothes are weather appropriate and there are blankets in the pram.
Ya Ive heard some say its good to take them out so they can get use to the germs. But others say wait a couple weeks. I can't imagine staying in with a newborn for weeks. I just wanna do what's best for baby but its hard to decide. Lol.
Dr will recommend you wait until they have their shots, after that just dress them appropriately for the heather :)
I took my son out when he was 3 days old & he was fine.