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IMMUNIZATION BRANCH

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.

The last large outbreak of measles in California was associated with Disneyland and occurred from December 2014-April 2015, when at least 131 California residents were infected with measles; the outbreak also infected residents of six other states, Mexico, and Canada.

In 2019, one outbreak of three cases linked to a patient with international travel has been reported in California. As of March 7, 2019, six confirmed measles cases, including the three outbreak-associated cases, have been reported in the following jurisdictions.

Total Reported Measles Cases in California, 2019

CountyTotal CasesPediatric Cases (<18 Years)Adult Cases (18 Years or Older)
​Los Angeles​1​1​0
​San Francisco​1​0​1
​San Mateo​2​1​1
​Santa Clara​1​1​0
​Santa Cruz​1​0​1
Total​6​3​3
 

Case counts for 2012-2017 are available in the Vaccine-Preventable Disease Summaries.  As of March 7, 2019, 21 confirmed measles cases were reported in California in 2018; these data are provisional and subject to change.

For information on measles cases and outbreaks nationwide, please see the CDC Measles Cases and Outbreaks.

 

If you are having difficulty accessing documents on this page please call  510-620-3737 or email ImmunizationBranch@cdph.ca.gov to request this information in an alternate format.

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