If a pregnant woman contracts rubella, she can lose her unborn baby, or the baby can be born with birth defects, blind, deaf, mentally retarded, have heart defects, or other serious problems. This disease is very serious for children under 5 years old, especially infants. Mumps Mumps is spread when germs pass from an infected person to the nose or throat of others. Mumps causes fever, headaches, and swollen glands under the jaw. One out of every 10 children who get mumps may develop a mild meningitis, sometimes causing encephalitis.
Mumps can also result in permanent loss of hearing.
Hepatitis B Hepatitis B is an infection of the liver caused by a virus. An infected pregnant woman can expose her newborn to this virus during birth. The virus stays in the liver of some people for the rest of their lives. Later, they can develop severe liver diseases, or cancer. Hepatitis B spreads through contact with blood or other body fluids.