Test tubes are stored at the Salud Chacao Laboratory in Caracas, Venezuela, on Feb. 10, 2016.
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By Maggie Fox / NBC News
February 23, 2016

Fourteen more people have caught the Zika virus in the U.S. without traveling to affected zones, federal health officials said Tuesday — strong evidence that the virus is sexually transmitted fairly often.

Some of those infected sexually have been pregnant women, the Centers for Disease Control and Prevention says.

“CDC and state public health departments are now investigating 14 new reports of possible sexual transmission of Zika virus, including several involving pregnant women,” the CDC said in a statement.

“In two of the new suspected sexual transmission events, Zika virus infection has been confirmed in women whose only known risk factor…”

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