Control of Ae. In those studies, the aim was to assure that no mosquitoes lived longer than nine calendar days, the amount of time required for the malaria parasite to reach infectivity in the vector. Control methodology involved spraying the inside of domiciles with a persistent pesticide because the vector entered houses, fed on sleeping humans, and rested on the walls before leaving to deposit its eggs. Over a nine-day time span, the average anopheline mosquito would feed three times, thus, the probability that the mosquito would contact the pesticide during its first nine days of life was high. In a brooded mosquito, high mosquito populations are usually an indication of a fresh emergence.
Annoyance can be considerable but the adults are mainly nulliparous, thus, vector potential is low.
Over time, annoyance declines but the adults become parous and the vector potential of the biting population increases. The technique of measuring vector potential by measuring the number of parous mosquitoes coming to bite yields the index that New Jersey uses to institute control for the prevention of human disease. When EEE is known to be cycling in Cs. This results in spot treatments in designated areas of the State rather than broad scale chemical coverage during emergency periods. The program works because the state and county agencies that are responsible for mosquito control are kept aware of the status of EEE and its mosquito vectors every season.