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](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/03/030217_LH_zika-birth-defects_main_free.jpg?fit=860%2C460&ssl=1)
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.
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