LOS ANGELES (AP) -- A quarantine has been issued for students and staff at two Los Angeles universities who may have been exposed to measles and either have not been vaccinated or can't verify that they have immunity.
Health authorities said Thursday that the order in connection with the University of California and Cal State University requires that affected people stay home, avoid contact with others and notify authorities if they develop measles symptoms.
More than 200 people were initially affected but officials expected that number to drop as they proved immunity.
The order comes as the number of measles cases nationwide has hit a 25-year high . A small outbreak of measles in Los Angeles County involving five confirmed cases is linked to overseas travel.
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