We have tons of highly relevant mosquitoes south of Lake Okechobee in FL and along the MS, LA, and TX Gulf Coast (Aedes aegypti). Zika may or may not spread efficiently via Aedes albopictus, which ranges up into Minnesota and Southern New England.
There's a lot about virus/vector adaptation we don't know, including as another poster alluded to, race of the target human. When West Nile virus was introduced into the US in 1999 in Queens, NY (Kennedy Airport), there were some cases in and around NYC. In 2000-2001, it spread to New England.
It turns out, however, that WNV's preferred biome is the high plains, and although it remains a minor problem here in New England, there are now many cases in Western KS and eastern CO.
In a nutshell, until Zika starts to colonize mosquito pools in South Florida and along the Gulf Coast, we won't really know how much of a human problem, if any, we will have.
As far as DDT? I'm surprised we aren't loading up the C-130s already, but the civil war within the WHO Public Health community (Geneva vs. the field) on this subject continues without letup. As long as environmentalists in both parties are in charge, DDT is off the table.
Does it work? Google "Zambia+Indoor residual spraying".
Good Morning Jim, interesting that you mentioned Lake Okeechobee, Belle Glade Florida (right on the Lake) has the regrettable distinction of having one of the highest rates of HIV/AIDS infection anywhere in the State, going back decades, and of COURSE it could not possibly have anything to do with the massive mosquito population, I mean, just because a pesky little insect which bites, pierces the skin, draws in blood into it’s insidious proboscis, and then bites ANOTHER victim the same way, it’s just not possible that AIDS could have been spread that way, why?
Because the government told them so. Told them it was ‘impossible’.
So all the government needs to do in this case is to announce that it is “impossible” for the ZIKA virus to be transmitted by mosquitoes, and viola!
Problem solved! ;)