Questions abound as Zika virus cases grow in U.S

February 4, 2016 12:00 AM

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RECIFE, Brazil -- For the first time, a health emergency has been declared in the U.S. because of the Zika virus, which is suspected of causing birth defects.

The Zika outbreak has entered a dangerous new phase, with the first confirmed transmission of the virus inside the U.S. Texas health officials sa...

Also read: Scientists think this disease is the next Zika

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