German measles. A viral infection with a rash that looks similar to that of measles. After the two to three week incubation period, a slight fever, swollen lymph glands, sore throat, aching bones, and a light rash develop. The rash begins on the face and spreads to the rest of the body.
Typically, this infection is mild. Its significance resides in its ability to cause birth defects in women who are infected during pregnancy, especially in the first three months of pregnancy.