West Nile found in local mosquitoes

Posted by Trina Kinstler - email

HAMILTON COUNTY, OH (FOX19) -- The Hamilton County Health Department says mosquitoes that were recently trapped in Union Cemetery in Symmes Township have tested positive for West Nile virus, a viral disease that can be passed from mosquitoes to humans.

"We received word from the Ohio Department of Health that mosquitoes collected on July 21 from a trap at Union Cemetery have tested positive for West Nile Virus," said Jeremy Hessel, Hamilton County Public Health Sanitarian.  "It's important to remember that the chances of developing severe symptoms from West Nile virus remain small, especially if residents do their part to eliminate mosquito breeding sites on their property and take precautions to avoid mosquito bites," Hessel said.

Hamilton County Public Health staff will be conducting surveillance activities in a half-mile radius near Union Cemetery in Symmes Township where the mosquitoes were collected. They will be looking for areas of standing water, applying larvicide, making sure swimming pools are operating properly and advising residents on precautions they can take to avoid mosquito bites.

Hamilton County Public Health continues to advise all Hamilton County residents to drain, dunk and protect in an effort reduce the mosquito population and prevent West Nile Virus:


  • Look for and drain sources of standing water on your property - litter, tires, buckets, flower pots, wading pools and similar items that could create standing water and become mosquito breeding sites.
  • Frequently change water in bird baths and pet bowls.
  • Drain small puddles after heavy rainstorms.


  • Apply mosquito larvicide, sometimes called mosquito "dunks," to areas of standing water that cannot be drained. The "dunks" are environmentally safe and won't harm pets. Purchase them at your local hardware store.


  • Cut your grass and trim shrubbery.
  • Make sure screens in windows and doors are tight-fitting and free from defect.
  • Wear long sleeves and pants during peak mosquito hours - dawn and dusk.
  • Use an EPA-registered insect repellent such as those containing DEET, picaridin or oil of lemon eucalyptus. Always follow the directions on the package.

WNV is a viral disease affecting the central nervous system that can be transmitted to humans by mosquitoes. It is important to note that most people who are bitten by an infected mosquito will never become sick. Everyone, however, should be aware of the symptoms of WNV. Symptoms may develop 3 to 14 days after someone is bitten by an infected mosquito.

For more information on West Nile Virus, please contact Hamilton County Public Health at (513) 946-7832 or visit us online at www.hamiltoncountyhealth.org.