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California Measles Outbreak Is Over, Health Officials Declare

The California measles outbreak is now declared over since no new cases have occurred in the past 42 days, as reported by the state's Department of Public Health (CDPH). The 42-day mark is significant because it accounts for two incubation periods, which are generally 21 days each. There do remain active measles cases in other parts of the country.

"We are pleased this outbreak is over, but caution that measles can be reintroduced in California at any time when an infected person brings it to the state," said Dr. Karen Smith, director of the CDPH and a state health officer. "The best defense for protection against the highly infectious measles is vaccination."

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There were 131 Californians reported infected with measles, with symptoms that typically begin with fever, cough, runny nose and red eyes, and within a few days the appearance of a red rash, usually first on the face and then spreading downward to the rest of the body. The outbreak started in December 2014, with many cases stemming from an outbreak at Disneyland.

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