The measles virus is spread very easily. Even being in the same room with a person with measles is enough to catch the disease. Symptoms include a rash, fever, cough, and watery eyes. Measles can also cause pneumonia, brain damage, seizures, or death. The mumps virus causes fever, headaches, and swollen salivary glands under the jaw.
Mumps can also result in permanent hearing loss.
The rubella virus usually causes a mild sickness with fever, swollen glands, and a rash that lasts about 3 days. But if a pregnant woman gets rubella,she can lose her unborn baby, or the baby can be born blind, deaf, mentally retarded, or with heart defects or other serious problems. It can also cause pneumonia and infection of the blood, joints, bone, throat, and heart covering. This disease is very serious for children younger than age 5, especially infants. Hepatitis B. Hepatitis B is an infection of the liver caused by a virus.