Rubella is serious if a pregnant woman catches the disease, especially during the first 3 months of her pregnancy. A mother can pass rubella on to her unborn baby. Rubella is usually a mild viral illness but if a pregnant woman catches it, it can lead to birth defects in her unborn baby.
Rubella is spread through the air by breathing, coughing and sneezing.If you've caught rubella, it takes 14-23 days before you get sick. You'll be infectious from 7 days before the rash appears until at least 4 days after.