In this Jan. 18, 2016, file photo, a researcher holds a container with female Aedes aegypti mosquitoes at the Biomedical Sciences Institute in the Sao Paulo's University in Sao Paulo, Brazil. (AP Photo/Andre Penner, File)
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In this Jan. 18, 2016, file photo, a researcher holds a container with female Aedes aegypti mosquitoes at the Biomedical Sciences Institute in the Sao Paulo's University in Sao Paulo, Brazil. (AP Photo/Andre Penner, File)
