Measles is a serious, highly contagious viral illness that causes fever, runny nose, cough, and a tell-tale rash of red spots.
Measles is most common in young children, but adults can get it too.
Measles is caused by a virus that is spread through the air, from person to person.
Measles is more severe in developing countries like Africa, where it can lead to serious health complications like pneumonia and encephalitis (inflammation of the brain).
Measles is preventable with vaccination, and treatment focuses on relieving symptoms.