Zika Virus Mystery: New Utah Case Stumps Researchers

In a puzzling case, a person in Utah became infected with the Zika virus, but health officials can't figure out how the person contracted it. "Zika continues to surprise us," and there's still a lot we don't know about the virus, Dr. Satish Pillai, incident manager for the Centers for Disease Control and Prevention's Zika response, said at a news conference today (July 18).