This data provides insight for public health officials and parents, particularly as vaccine-preventable diseases such as measles are making a comeback in some parts of the U.S.
Last Thursday, more than 200 students and staff at two Los Angeles universities have been placed under quarantine because they may have been exposed to measles and either have not been vaccinated or cannot verify that they are immune.
There are no cases in Ohio, though the U.S. measles case count just reached its highest rate in 25 years, with close to 700 confirmed cases. That includes outbreaks in neighboring Michigan, Indiana and Kentucky.
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Associated Press contributed to this report.
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