The rubella virus causes Rubella or German Measles. This disease occurs worldwide, with the peak time around spring in temperate climates. Due to the introduction of a vaccination in 1969, occurrences in the U.S. and Europe are more rare. Therefore, the Western hemisphere is relatively free of this disease. However, it still has outbreaks in men in the UK because they weren't vaccinnated. And, developing countries still get outbreaks as they are not able to access the vaccine. Symptoms include a one to three day disease period, which is usually mild and is acquired by airborne droplets--incubation takes 2-3 weeeks. It is more of a danger to infants and pregnant women. If the mother is infected within the first 20 weeks of her pregnancy, the baby may be spontaneously aborted or born with serious and incurable illnesses. In others, the disease can be mild and even pass unnoticed.