Measles Measles is a highly contagious viral disease. It is widespread in many parts of the world, including Europe, Africa, and Asia. Measles begins with a fever that lasts for a couple of days, followed by a cough, runny nose, conjunctivitis (pink eye), and a rash. The rash typically appears first on the face, along the hairline, and behind the ears and then affects the rest of the body. Infected people are usually contagious from about 4 days before their rash starts to 4 days afterwards.
• Who’s at Risk, How it Spreads, and More
The last large outbreak of measles in California was associated with Disneyland and occurred from December 2014 through April 2015, when at least 131 California residents were infected with measles; the outbreak also infected residents of six other states, Mexico, and Canada. Archived summary reports from this outbreak can be found below.
Child care facilities and schools with low vaccination rates are at increased risk for outbreaks of vaccine-preventable diseases. Lookup vaccination rates: