with dd1 we did nothing different, with dd2 we had boosters and ran away from anyone with a filthy cough, but apart from that just carried on as normal, we were out in playgrouds etc from 3 days old, although i wouldnt 'show' the baby to other kids close up...look dont touch . having another child who would go crazy if we didnt go out every day we couldnt really lock our selves away.