Mosquitoes have been almost completely wiped out on two Chinese islands

Grew up in central China (Wuhan), a notoriously swampy region, we were always taught about two types of mosquitos: the regular ones and the "poisonous" ones (tiger mosquito). I remember avoiding these tiger mosquitos like plague. To this day I still hate mosquitos with a passion.

These little buggers are so adaptive, they are like the stealth jets of mosquito world: They are smaller, quieter, swifter. When they land on your skin you wouldn't feel a thing even in plain sight. They've even learned to avoid blue lights (traps) and became resistant to various bug repellant that we used. It was an endless arms race. Worst of all, its bite would leave you itchy for days. I still remember in some of my elementary school photo, my legs looked like they were the surface of moon.

If there is one thing I learned is that if you want to get rid them, you would have to do it 100%, because even if you leave 0.1% alive, they will adapt and come out stronger than ever.

Interesting but an isolated environment. I'm sure you could wipe out most any disease or disease vector if that area was completely isolated from the rest of the world.