In 2013, an unvaccinated teen visited London and carried the measles virus home to New York City, according to a report the journal Pediatrics that traces the outbreak, the largest in the city since 1992. Fifty-eight people came down with the measles, out of more than 3,300 exposed contacts identified by public health officials.
from WebMD Health https://ift.tt/2KatGWq
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