Some students and employees at two Los Angeles universities have been quarantined because of possible contact with the measles virus.
The University of California, Los Angeles (UCLA) and the University of California, Los Angeles, have announced the orders this week.
Representatives of the University of California at Los Angeles learned on Monday that a student "had received measles" and was in the university while he was infected.
Since then, UCLA has reached other potentially affected individuals, officials said.
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"Most of these people have since been cleared, but we still expect medical data from 119 students and 8 lecturers to determine if they are immune to measles," the statement said. "As a result, LACDPH decided to quarantine these individuals until their immunity was determined."
Quarantine is expected to last for about 24 to 48 hours until "their proof of immunity is established", but some quarantines can continue for up to a week, officials said.
Separately from Los Angeles State University of California, on Thursday, information about "potential exposure" is published in the library between 11:00 and 15:00. on April 11.
As a result, health officials asked "Cal State LA employees" who may have been exposed to "provide immunization records or be screened for immunity" and to refrain from working.
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"These employees, including student workers, are sent home under quarantine orders and ordered to stay at home and avoid as far as possible contacting other people," the update said.
Seventy-one students and 127 employees are quarantined at California State University, Los Angeles, school officials said, according to Associated Press.
Quotations for quarantine come as a small occurrence of Los Angeles measles with at least five confirmed cases of travel abroad. The state has registered 38 measles cases from Thursday to 11 at the same time last year, said Dr. Karen Smith, director of the California Department of Public Health.
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It has been reported that measles in the United States have climbed to their highest level for the past 25 years, and this year they have approached 700 cases as a result of the revival due to disinformation that turns parents into vaccines. Approximately three-quarters of this year's disease in the US was in New York state.
The vaccine, which became available in the 1960s, is considered safe and highly effective, and so pox was declared to be all but eliminated in the United States in 2000.
Associated Press contributed to this report.