It is true that infants are protected from birth against measles by maternal antibodies if the mother is immune to measles, but this passive immunity gradually disappears after about six months, ...

This passive immunity protects the infant from some infections during their early life. Immunizations change the body in some way so it can respond effectively to various diseases. The most common ...

The U.S. declared measles eliminated more than 20 years ago, thanks to an exceptionally safe and effective vaccine. But efforts to undermine confidence in that vaccine have contributed to these recent ...