If we are assuming that EEE exists throughout the town, why aren’t we conducting a town-wide spraying?

There are many species of mosquitoes in our area, but not all are carrying EEE. The species of mosquitoes that carry and transmit EEE are prevalent in reedy marshes and red maple swamps. Mosquito Control has surveillance traps throughout the region and sends samples for virus testing on a weekly basis. Decisions to adulticide a target area or town-wide are based on the results of these tests.