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Two Mosquito Samples Test Positive for West Nile Virus


Culex and Asian Tiger Mosquitoes are presently active


Suffolk County Health Commissioner Dr. James L. Tomarken announced today that two mosquito samples one Culex pipiens-restuans and one Culex salinarius collected September 21, 2016, from Aquebogue, have tested positive for West Nile virus.

To date this year, 140 mosquito samples, 15 birds and one horse have tested positive for West Nile virus. Horse owners are reminded to vaccinate their horses for West Nile virus and Eastern Equine Encephalitis (EEE) virus.

Three humans have tested positive for the virus in Suffolk County this year.

Residents are advised to continue to take precautions, as surveillance indicates that the both Culex pipiens-restuans and Asian Tiger Mosquitoes (Aedes albopictus), are presently active in Suffolk County. Asian Tiger mosquitoes are small mosquitoes with black and white stripes that are known to bite aggressively near your feet and ankles during the day. 


“We recommend that residents take three actions to avoid being bitten by mosquitoes,” said Dr. Tomarken.


  1. Eliminate stagnant water where mosquitoes breed by dumping the water and scrubbing the containers weekly to remove the eggs;
  2. Use  mosquito repellent with EPA approved labeling on the product and follow instructions;
  3. Consider using dunks, treating yards with barrier type sprays containing permethrin as the active ingredient, or hiring licensed pesticide applicators.

If these actions don’t help, residents may contact the Department of Public Works’ Vector Control Division at 631-852-4270 or via the web ( to request a vector control crew to check the area.

“Adult spraying for Asian Tiger mosquitoes isn’t very effective as it reduces their numbers for only a few days before new mosquitoes emerge from larvae that has been thriving in containers,” said Tom Iwanejko, chief of vector control. “This is why it is so important to dump the water on a regular weekly basis and scrub any eggs on the inside of the container!


To reduce the mosquito population:

  • Remove all discarded tires on the property. 

  • Dispose of tin cans, plastic containers, ceramic pots or similar water-holding containers.

  • Make sure roof gutters drain properly, and clean clogged gutters.

  • Turn over plastic wading pools and wheelbarrows when not in use.

  • Change the water in birdbaths and scrub the containers.

  • Clean vegetation and debris from the edges of ponds and keep shrubs and grass trimmed.

  • Clean and chlorinate swimming pools, outdoor saunas and hot tubs.

  • Drain water from pool covers and scrub the covers.

  • Make sure all windows and doors have screens, and that all screens are in good repair.



Video: Scott Campbell, PhD, shows home owners many of the places in your back yard where mosquitoes breed.


For further information on mosquitoes and mosquito-borne illnesses, visit the Department of Health Services’ website at



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Categories: Health

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