• Overview

    The Nassau County Department of Health conducts mosquito and West Nile Virus surveillance activities at forty-two (42) trap sites throughout the County. Surveillance activities include:

    identifying species; determining population distribution and abundance; separating and sending selected mosquitoes for viral testing; and thoroughly investigating all cases of suspect or confirmed encephalitis, including West Nile virus, to determine the source of infection.

    For information concerning West Nile Virus activity call Nassau County Health Department Mosquito Surveillance at:

    (516) 572-1211
    Monday through Friday from 7:45am until 3:30pm.

    Nassau County Department of Public Works (DPW) reponds to mosquito or stagnant water problems. To report a problem, please phone DPW's Mosquito Control Unit at:

    (516) 572-1166
    Monday through Friday from 7:45am until 3:30pm.