Adult Mosquito Control to Protect Public Health from Mosquito-Borne Disease

West Nile encephalitis, eastern equine encephalitis, St. Louis encephalitis and Zika virus are mosquito-borne diseases that can adversely impact human health in Maryland. If any mosquito-borne disease becomes a real or imminent public health threat, adult mosquito control will be a priority issue. Under such conditions, spray exclusion zones will not be recognized and the action thresholds may be lowered. The department will exercise all means possible to reduce the adult mosquito population to the lowest level possible within the area where disease transmission to humans is a concern.