"5% of U.S. Pregnant Women With Zika Had Baby With a Birth Defect"

"Five percent of pregnant women with a confirmed Zika infection in the United States territories, including Puerto Rico, went on to have a baby with a related birth defect, according to the most comprehensive report to date from federal officials.

The report, published on Thursday by the Centers for Disease Control and Prevention, also provided for the first time preliminary estimates of this risk by trimester. Previously, there were not enough births following exposure to the Zika virus to make such estimates.

This new report reviewed nearly 2,550 cases of women with possible Zika virus infection who completed pregnancies — meaning they gave birth, miscarried or experienced stillbirth — from Jan. 1, 2016 to April 25, 2017."

Catherine Saint Louis reports for the New York Times June 8, 2017.