Rubella is a viral infection transmitted from person to person by droplets via coughs and sneezes. In healthy individuals it is usually a mild disease. Up to 50 % of individuals infected with rubella may not show symptoms. However, if a woman gets rubella shortly before getting pregnant or during the first three months of pregnancy, it is very likely to result in miscarriage or congenital anomalies known as congenital rubella syndrome (CRS).