Six Zika-affected pregnancies in the U.S. have resulted in birth defects, the Centers for Disease Control and Prevention says.
Three of the pregnant women miscarried, while three gave birth to infants with birth defects resulting from Zika. The mosquito-borne virus is known to cause a condition called microcephaly, in which infants are born with abnormally small heads.
The CDC announced Thursday it will start regularly reporting pregnancy outcomes from women with evidence of Zika infection. The agency previously said it is monitoring nearly 300 pregnant women across the U.S. states and territories thought to have the virus.
All of the pregnant women with Zika are thought to have contracted it either while traveling abroad or through contact with a traveler. The data released Thursday is current as of June 9.
