While it causes a mild illness in children, and is only slightly more serious where adolescents and adults are infected, it normally gives no cause for concern at all.
However, eradicating rubella has been a focus of much Action Medical Research funded work in the past. This is because if a woman becomes infected with the virus during the first four months of pregnancy, it passes to the developing baby and can cause severe birth defects such as deafness, blindness, congenital heart defects and cerebral palsy.