You remain contagious for about a week after the rash has faded. Recovery is complete. The immune system makes chemicals called antibodies that destroy the virus. Afterward you have natural immunity to the disease, that is, your immune system has produced enough antibodies to the virus so that it cannot successfully reinvade your body. Prevention Immunization is effective and readily available.
Many states require it of school-age children.
A woman who is not demonstrably immune should be immunized before becoming pregnant. Since the vaccine is derived from the live virus, it is not considered safe to receive it during pregnancy. In recent years there has been an intense public health campaign for immunization against the rubella virus, with the eventual goal of completely eliminating it. The reason is the risk to fetus es of women who become infected either during pregnancy or the weeks immediately preceding it. The virus can easily pass through the placenta , and its effects are potentially very serious, especially during the early weeks of pregnancy.