As someone who worked hard to stop GMO mosquitoes in the US's first test (proposed for Key West, Florida) and watched Intrexon/Oxitec nearly bankrupt itself trying, I can tell you it's not going to happen. Some folks like to say, "Nature finds a way."
The most effective way to prevent mosquitoes is still what we call "boots on the ground," eliminating their fresh water supplies. The Cayman Islands' highly publicized test of GMO mosquitoes was a complete failure.
