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July 29, 2010

16 Additional West Nile Virus-Positive Mosquito Pools

Confirmed in Nassau County

Uniondale, NY – Nassau County Department of Health today announced the isolation of West Nile virus (WNV) from 16 additional mosquito pools in Nassau County.  This brings the total to 30 mosquito pools positive for West Nile virus in Nassau County this year.

The latest samples, all Culex pipiens-restuans, were collected on July 20th in West Hempstead, Valley Stream and Lakeview, July 21st in Massapequa Park, Massapequa Preserve (2 pools), Wantagh and Merrick,  July 22nd  in Glen Cove (2 pools), July 23rd  in East Hills, Mineola, Garden City, East Garden City, Westbury and Old Westbury.  The test results were confirmed today by the New York State Department of Health.

To date, one human has tested positive for West Nile virus in Nassau County this year.

The Nassau County Departments of Health and Public Works will continue their mosquito control efforts by inspecting breeding sites and, when necessary, applying larvicide. Mosquito surveillance will continue at 42 trap sites located throughout the County, and will be intensified in those communities where positive mosquito pools were identified.  Also, Nassau County is now making preparations for ground spraying in targeted areas of the County.

Because West Nile virus is present throughout New York State and beyond, and the primary carrier of West Nile virus in Nassau County is Culex pipiens-restuans, or “the house mosquito” which does not fly more than 200 feet from its breeding site, residents are urged to continue to take these precautions for safety and protection:

  • Remove or empty standing water from children’s outdoor toys, flower pots, garbage cans, pails, old tires, or any object that can hold water.
  • Make sure roof gutters drain properly; clean clogged gutters in the spring and fall.
  • Keep swimming pools chlorinated and their covers free of stagnant water.
  • Change the water in birdbaths every two or three days.
  • Install window and door screens and keep them in good repair.
  • Consider wearing long sleeves, pants, socks and mosquito repellent (according to directions) if outdoors when mosquitoes are active, especially in the late afternoon and evening hours.
  • Decorative ponds and water features should be circulated or chlorinated if they do not contain fish to prevent mosquito breeding.

For mosquito, stagnant water, or drainage problems, call the Nassau County Department of Public Works at: (516) 572-1166, weekdays from 7:45 am to 3:30 pm.

For additional information on West Nile virus activity, contact the Nassau County Department of Health at: (516) 227-9700.  Additional West Nile virus information may be found on the Nassau County Department of Health website at