Basically 0, there are only a few species of mosquito that carry disease. Other species fulfill all other ecological roles without spreading horrible diseases.
If the documentary mimic (1997) is to believed we will be looking at 6 foot mosquitos in 3 to 5 years.
Famous last words... (Edit typo:) Till we find out when its too late that they had a genuine purpose in a very specific ecosystem after we've eradicated them?
Growing up my sister got dengue, so I hate mosquitoes, she was fine, I know dengue was no joke, but I always worry we make too many assumptions as humans, only to be proven wrong by nature somehow.