This looks like the official press release: https://www.oxitec.com/en/news/oxitec-announces-landmark-approval-of-florida-keys-pilot-project-to-combat-mosquito-

This looks like the official press release: https://www.oxitec.com/en/news/oxitec-announces-landmark-approval-of-florida-keys-pilot-project-to-combat-mosquito-that-transmits-dengue-zika https://www.oxitec.com/en/news/oxitec-announces-landmark-app... An earlier press release (https://www.oxitec.com/en/news/oxitec-transitioning-friendly-self-limiting-mosquitoes-to-2nd-generation-technology-platform-paving-way-to-new-scalability-performance-and-cost-breakthroughs https://www.oxitec.com/en/news/oxitec-transitioning-friendly...) describes their self-limiting technology: > Oxitec’s 2nd generation insect technology uses two small genetic modifications to create self-limiting, non-biting insects that are male-selecting (only male progeny survive from mating with a wild-type female insect). Upon the mating between an engineered Oxitec male insect and a wild-type female target insect, the female progeny die, generating near-term suppression effects. The male progeny survive, half of which carry the self-limiting gene while the other half carry natural insecticide-susceptibility genes. In subsequent generations, the self-limiting gene is diluted via a Mendelian pattern – enabling population suppression for up to 10 subsequent generations before the introduced genes are eliminated from the environment. So it sounds like they are engineered to leave behind no artificial genes over the long term. (However, there will still be wild mosquitoes descended from genetically engineered ones, but apparently with genes that came from natural sources.)