Zika causes birth defects in one in 10 pregnancies: U.S. study

By Julie SteenhuysenCHICAGO (Reuters) - About one in 10 pregnant women with confirmed Zika infections had a fetus or baby with birth defects, offering the clearest picture yet of the risk of Zika infection during pregnancy, U.S. researchers said on Tuesday.The report from the Centers for Disease Control and Prevention is the first to analyze a group of U.S. women with clear, confirmed test results of Zika infection during pregnancy.Once considered a mild disease, a large outbreak of the virus th