Measles spreads through the air when an infected person breathes, coughs or sneezes. The virus can linger in the air for up to two hours after the person has left a room, making it easy to catch without direct contact.
Symptoms typically begin 7 to 14 days after exposure and may include:
- Fever
- Cough
- Runny nose
- Red, watery eyes (conjunctivitis)
- Feeling achy or run down
- Tiny white spots inside the mouth (Koplik’s spots)
- A blotchy skin rash that spreads from the head to the rest of the body
People with measles are contagious from four days before to four days after the rash appears.