Three babies with birth defects caused by Zika have been born in the U.S., the government reported Thursday in its first accounting of pregnancy outcomes involving the virus. Birth defects from Zika were also seen in three other pregnancies that ended.

The Centers for Disease Control and Prevention has been tracking the pregnancies of women with Zika infections since the beginning of the year. So far, 234 pregnant women — residents and visitors — have been diagnosed with Zika. Some babies have been born with no immediate signs of problems, according to the CDC’s Dr. Denise Jamieson, but she would not say how many. Most of the pregnancies are ongoing. CONTINUE