CDC: Zika virus sexually transmitted in Texas

Dallas, Texas, medical officials reported the first known case of Zika transmission in the United States – and found it was contracted by sexual contact, not mosquito bite.

The discovery came just a day after the World Health Organization declared Zika, a virus that is suspected of causing brain-growth defects in fetuses, a global public health emergency.

Previously, it was thought the virus was transmitted by mosquitoes.

But in a Twitter message, a Dallas County Health and Human Services official said testing by the U.S. Centers for Disease Control and Prevention confirmed the victim actually contracted the virus by engaging in sexual activity with a person who had just traveled to Venezuela, the Associated Press reported. The infected person had not traveled outside the United States, the county reported.

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