See above link to Alameda County Public Health Department's Measles Situation Update 4/4/19.
Measles, also called rubeola, is a highly contagious illness caused by a virus. It starts with fever that gets worse over several days, cough, runny nose, and watery, red eyes. After a few days a rash develops and lasts up to a week. Then it gets better by itself. Some people get a more serious case of measles which can cause diarrhea, middle ear infection, pneumonia (lung infection) or encephalitis (brain infection).
If symptomatic, call your health care provider.