• Nadja Mayerle with the Salt Lake City Mosquito Abatement District looks at a mosquito Tuesday, July 19, 2016, in Salt Lake City. Health authorities in Utah are investigating a unique case of Zika found in a person who had been caring for a relative who had an unusually high level of the virus in his blood. Exactly how the disease was transmitted is still a mystery, though the person has since recovered.  (AP Photo/Rick Bowmer)

    CDC probing possible first Zika case from US mosquito bite

    MIAMI (AP) — Health officials in Florida are investigating whether the Zika infection of a woman in the Miami area could be the first transmission of the virus from a mosquito bite in the continental United States.