
Warming weather usually slows transmission of the virus, but it is not clear that this outbreak is fading, experts said. DONALD G. McNEIL Jr. https://nyti.ms/2EmxkfF http://bit.ly/2HEL7iC The New York Times Health Measles, Vaccination and Immunization, your-feed-science May 20, 2019 at 12:00AM
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