I`ll tell you this Doc...about 4 years ago we had 4 months without rain...As I have no neighbors there is little chance of standing water anywhere nearby.. I still got bitten every night whilst outside..1.Vector ( carrier ) control ( such as removing water-containing sources; using fish that feed on larvae ; insecticide spraying; GM mosquitoes ).
On occasion I sit and wonder just where the hell they come from in those conditions?
These days I have a fish pond full of guppies that I do not feed and I know for a fact that the fish are eating the eggs and the wrigglers..
Insecticides and off lotion is expensive for locals and they dont use it for that reason.