The FDA has approved a new vaccine that protects children against six diseases.
Vaxelis is designed to prevent diphtheria, tetanus, whooping cough, polio, hepatitis and Hib, a type of bacteria that causes serious illness.
It is approved for children between six weeks and four-years-old.
The vaccine was developed jointly by drugmakers Sanofi and Merck.
It will not be available to the public until 2020 or later.
