I hate nature's flying dirty syringes as much as anyone else, but most of the proposed solutions are either localized to a certain area, or species-specific, or

I hate nature's flying dirty syringes as much as anyone else, but most of the proposed solutions are either localized to a certain area, or species-specific, or both. Why wouldn't we just start with the disease vector species, then check to see if their eradication had an environmental impact?