German measles

German measles, or rubella, infectious viral disease causing rash and fever. Although physical symptoms are usually mild, it is dangerous if contracted by a woman during the first 3 months of pregnancy, since it can then seriously harm the fetus, causing birth defects. There is a vaccine, which is usually given to children and to women of childbearing age who have not had the disease. Those who have already had it are immune to getting it again.

See also: Measles.