FILE - In this Wednesday, Aug. 24, 2016 file photo, Aedes Aegypti mosquito larvae swim in a container at the Florida Mosquito Control District Office in Marathon, Fla. A study released on Wednesday, May 24, 2017 suggests Zika began spreading in Florida mosquitoes about three months before infections showed up in the Miami area in the summer of 2016, and the virus likely was carried in by travelers from the Caribbean. (AP Photo/Wilfredo Lee, File)
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