The announcement comes after public health officials in California and Utah confirmed earlier this month nine cases, all of them visitors of either Disneyland or Disney California Adventure Park in Anaheim between December 15 and December 20.
One school in Huntington Beach has barred children who could not prove that they were vaccinated for measles from going to school until January 29 , according to the county health agency.
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5 things to know about measles
CNN’s Kevin Conlon contributed to this report
