I came across an article these days, which was telling about how the newborns can be protected against flu. A sort of a scientific experiment proved something that many of the doctors were supposing to be a fact, but till now it had no scientific validity of such a hypothesis.
Now mothers can take preventive measures and take a vaccine. While the body of the mother will eliminate antidotes to fight the little infection, some of these antidotes will be shared with the baby inside. So as a result when the baby is born it has a sufficient amount of vaccine to be protected against the early flu, which is characteristic for a vast share of the newborns.