FILE - This 2006 file photo provided by the Centers for Disease Control and Prevention shows a female Aedes aegypti mosquito in the process of acquiring a blood meal from a human host. The Aedes aegypti mosquito is behind the large outbreaks of Zika virus in Latin America and the Caribbean. On Friday, July 29, 2016, Florida said four Zika infections in the Miami area are likely the first caused by mosquito bites in the continental U.S. All previous U.S. cases have been linked to outbreak countries. (James Gathany/Centers for Disease Control and Prevention via AP, File)
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