CDC. US: Measles is a highly contagious respiratory disease caused by a virus. It
spreads through the air through coughing and sneezing. Measles starts
with a fever, runny nose, cough, red eyes, and sore throat, and is
followed by a rash that spreads all over the body. About three out of 10
people who get measles will develop one or more complications including
pneumonia, ear infections, or diarrhea. Complications are more common
in adults and young children.
