Certain birth defects are on the rise since Zika arrived in the U.S.

Zika-infected mothers are 20 times more likely to have babies with certain birth defects

stethoscope on a pregnant woman's belly

ZIKA BABIES   Zika infection during pregnancy substantially raises the risk that the baby will have certain birth defects, such as microcephaly and other brain deformations. A new CDC study quantifies that impact in the United States.

EmiliaUngur/shutterstock

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