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DNREC encourages awareness of mosquito-borne diseases as biting mosquito season extends into fall

Date Posted: Friday, September 22nd, 2017
Categories:  Division of Fish and Wildlife DNREC

Recent West Nile detection in Mosquito Control Section’s sentinel chickens shows need for continued vigilance

DOVER – The detection this week of West Nile virus (WNV) in sentinel chickens monitored for mosquito-borne diseases by DNREC’s Mosquito Control Section serves notice to Delawareans that mosquitoes remain very active, especially during unseasonably warm weather the state is now experiencing, and that precautions should continue to be taken against mosquito bites that could transmit WNV.

“Concerns about mosquito-borne diseases could continue for several more weeks, with the peak period for transmission lasting into mid-October,” said Dr. William Meredith, Mosquito Control Section Administrator within the Division of Fish & Wildlife. “The possibility of mosquito-borne disease transmissions won’t subside until colder autumn temperatures set in.”

Delaware’s Division of Public Health Laboratory reported seven WNV-positive chickens from five of the Mosquito Control Section’s 20 monitoring stations throughout the state – four in New Castle County and one in Sussex County. Since late July, a total of 19 sentinel chickens have tested WNV-positive this year: 13 from New Castle County, five from Kent County, and one positive from Sussex County. Past north-to-south trends indicate Delaware could see a possible increase in WNV-positive findings in downstate sentinel chickens in the coming weeks. Eastern equine encephalitis (EEE), another mosquito-borne disease affecting both people and horses, was also found at a sentinel chicken station in southwestern New Castle County in late July. No human cases of WNV or EEE have been reported this year in Delaware.

The recent WNV findings in sentinel chickens prompted the Mosquito Control Section to increase mosquito population surveillance in areas surrounding the stations where the chickens tested positive, to take control actions including aerial spraying and residential fogging. In addition, the section encourages residents to use repellent containing DEET, to wear long sleeves and long pants outdoors, and avoid mosquito-infested areas or being outside during times of peak mosquito activity.

To reduce mosquito-breeding habitat, the Mosquito Control Section advises residents to drain or remove items that collect water, such as discarded buckets or containers, uncovered trash cans, stagnant birdbaths, unprotected rain barrels or cisterns, old tires, upright wheelbarrows, flowerpot liners, depressions in tarps covering boats, clogged rain gutters, corrugated downspout extenders, and unused swimming pools.

Mosquito Control also encourages residents to report intolerable numbers of biting mosquitoes by calling the numbers below. Staff answers phones between 8 a.m. and 4 p.m. Monday through Friday. Callers after business hours or during weekends or holidays should leave their name, phone number, address and a brief message.

  • Glasgow Office, serving New Castle County and northern Kent County including the Dover area: 302-836-2555
  • Milford Office, serving Sussex and southern Kent Counties: 302-422-1512

For more information about:

  • Mosquito biology/ecology and control – contact the Mosquito Control Section’s Dover office at 302-739-9917.
  • Reporting WNV-suspect wild birds, or for requests for mosquito relief – for upstate areas from Dover north, contact Mosquito Control’s Glasgow field office at 302-836-2555; for downstate areas south of Dover, contact Mosquito Control’s Milford field office at 302-422-1512.
  • WNV or EEE in humans and related medical issues – contact the Delaware Division of Public Health at 888-295-5156.
  • WNV or EEE in horses and equine vaccines – contact the Department of Agriculture’s Poultry and Animal Health Section at 302-698-4500 or 800-282-8685 (Delaware only).
  • For more information on West Nile Virus or Eastern equine encephalitis – visit the CDC website.

Media Contact: Joanna Wilson, DNREC Public Affairs Office, 302-739-9902


DNREC Logo The Delaware Department of Natural Resources and Environmental Control (DNREC). Want your news hot off the press? Join the DNREC press release email list. Send a blank email to join-dnrec_press_releases@lists.state.de.us.
For more information, contact the DNREC Public Affairs Office, at 302.739.9902

  
The Division of Fish & Wildlife conserves and manages the fish and wildlife resources of the state, including restoration of habitats, and provides safe fishing, boating and hunting opportunities. Follow the Division on FaceBook.

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