No new measles cases have been reported in California for two 21-day incubation periods, says California Department of Public Health (CDPH).
"We are pleased this outbreak is over," said CDPH director Karen Smith, who nevertheless warned that it could reappear in the state at any time. "The best defense for protection against the highly infectious measles is vaccination," she said.
AdvertisementThe outbreak began at a Disney theme park, and researchers have said it was able to spread because not enough children were being vaccinated. Measles is a highly contagious disease that causes a rash and fever, and can lead to complications ranging from brain damage to hearing loss and blindness. In rare cases, it can result in death.
Nationwide, 159 cases of measles have been reported since January 1 in 18 states and the District of Columbia, the federal Centers for Disease Control says. Besides California, the hardest hit states have been Illinois, Washington, Nevada and Arizona, according to data on the CDC website.
While not endemic to California, the CDPH said measles can circulate "when a contagious, infected person enters the state and exposes others." Two doses of the MMR vaccine are more than 97 effective in preventing measles, it said.
But many parents have refused to let their children be vaccinated, fearing a link between MMR and autism a link that experts have discredited.
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