AKA German measles, generally milder than rubeola, air-born transmission 2 to 3 week incubation , slight fever little bit of a rash, a problem when congenital rubella syndrome occurs, if a woman has had a vaccine or had rubella before pregnancy she will have no problems but if not and she becomes prego. its bad news, the severity of the damage depends on when she got infected and how far along she is in her pregnancy. 1st trimester miscarriage, later on possible birth defects, deafness, cataracts, heart defects, mental retardation.