WASHINGTON • New research suggests a one-two punch could help battle polio in some of the world’s most remote and strife-torn regions: Giving a single vaccine shot to children who have already…
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Thu, 08/21/2014 - 11:47pm
WASHINGTON • New research suggests a one-two punch could help battle polio in some of the world’s most remote and strife-torn regions: Giving a single vaccine shot to children who have already…