
By DONALD G. McNEIL Jr. from NYT Health Following intensive vaccination efforts, measles cases plunged across the world. Now clusters of new infections — some linked, some not — have confounded health officials. https://ift.tt/2UrcGUW
By BY BENJAMIN MUELLER AND JAN HOFFMAN from NYT Health Nationwide, the number of kindergartners with the required shots fell below the targ...
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