In a statement released by Oxitec, the British-based biotech company said the initial release of its genetically modified OX5034 Aedes aegypti mosquito was âexpected to be in operation no earlier than April 2021,â leaving many residents to wonder exactly when the release will be. The question looms large while the Florida Keys community looks to the Florida Keys Mosquito Control District, a tax-supported entity, for answers. Neither the district nor Oxitec has publicly announced where or when the releases will occur. Oxitec has previously said the target areas lie between Mile Marker 10 and Mile Marker 93. Oxitecâs information is proprietary as a private for-profit entity contracted by the local bug board.