NPR News: Why Didn't Zika Cause A Surge In Microcephaly In 2016?

Why Didn't Zika Cause A Surge In Microcephaly In 2016?
Scientists predicted that more than 1,000 babies would be born with the birth defect in Brazil last year. That never happened. Why?

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March 31, 2017 at 01:21AM
Children's Health