FILE - In this Sept. 29, 2016 file photo, Aedes aegypti mosquitoes, responsible for transmitting Zika, sit in a petri dish at the Fiocruz Institute in Recife, Brazil. The South American country declared an end to its public health emergency for the Zika virus on Thursday, May 11, 2017, 18 months after a surge in cases drew headlines around the world. (AP Photo/Felipe Dana, File)
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