"Lead a normal life, but use common sense when you go out in public," Dr. Tolcher says. Keep baby out of the sun, and avoid sick people (no toddler birthday parties!) and crowded enclosed spaces (such as the mall during the holidays). "Teach older siblings to touch baby's feet instead of her hands and face, which will help prevent the spread of infection," he adds. And make your older child the hygiene police, says Dr. Jana. He'll love telling guests, "Don't touch the baby without washing your hands."