Hand washing is without a doubt the most important way to protect you baby from getting sick. It is safe to let other people touch and hold her, but they should always wash their hands first. This is especially important with infants who have not yet had their first set of vaccinations. It's also important to have good judgment about who your child is exposed to. Certainly someone who is coughing or sneezing ism ore likely to transmit germs to your baby. But, kisses from a healthy person that don't land near baby's nose or mouth (or hands that might go into the mouth) are relatively safe.