Zika

CDC monitoring 320 US pregnant women for Zika

An aedes aegypti mosquitoes is seen in The Gorgas Memorial institute for Health Studies laboratory as they conduct a research on preventing the spread of the Zika virus and other mosquito-borne diseases in Panama City February 4, 2016. REUTERS/Carlos Jasso - RTX25IDW

An aedes aegypti mosquitoes is seen in The Gorgas Memorial institute for Health Studies laboratory as they conduct a research on preventing the spread of the Zika virus and other mosquito-borne diseases in Panama City February 4, 2016. REUTERS/Carlos Jasso - RTX25IDW

The U.S. Centers for Disease Control and Prevention (CDC) said on Thursday that it is monitoring 320 U.S. pregnant women with laboratory evidence of Zika infection, up from 287 women a week earlier.

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