Comment With mosquitoes? Nothing. (Score 4, Interesting) 100
One specie of mosquito means nothing - there are just so many other ones.
That said, this does not even do that. Mosquitoes with wolbachia still survive and breed - but they don't live as long, and when the mosquito infected the dengue virus can't survive in the mozzie, so it doesn't get infected and so it can't spread the disease.
It is done pretty much everywhere - I'm a little surprised it isn't standard procedure in the US too.