Certain mosquito species carry the West Nile Virus, which can cause humans to contract West Nile Encephalitis, an infection that can result in inflammation of the brain. Through mid July, 31 mosquito samples have been identified with the West Nile Virus in Delaware County this year. There have been no confirmed human cases in Pennsylvania this year.

Residents can eliminate mosquito-breeding areas by:

  • Disposing of cans, buckets, containers, pots that hold water.
  • Disposing of discarded tires that can collect water. Mosquitoes breed in stagnant water.
  • Cleaning clogged roof gutters, particularly if leaves tend to plug drains.
  • Turning over plastic wading pools when not in use.
  • Turning over wheelbarrows and not letting water stagnate in birdbaths.
  • Aerating ornamental pools or stocking them with fish.
  • Cleaning and chlorinating swimming pools not in use and removing water that collects on pool covers.
  • For stagnant pools of water, homeowners can buy Bti products at lawn and garden, outdoor supply, home improvement and other stores. This naturally occurring bacteria kills mosquito larva, but is safe for people, pets, aquatic life and plants.

In addition, there are a few simple precautions to prevent mosquito bites:

  • Make sure screens fit tightly over doors and windows to keep mosquitoes out of homes.
  • Consider wearing long-sleeved shirts, long pants and socks when outdoors, particularly when mosquitoes are most active at dawn and dusk, or in areas known for having large numbers of mosquitoes.
  • When possible, reduce outdoor exposure at dawn and dusk during peak mosquito periods, usually April through October.
  • Use insect repellants according to the manufacturer™s instructions.
  • An effective repellant will contain DEET, picaridin or oil of lemon eucalyptus. Consult with a pediatrician or family physician if you have questions about the use of repellant on children, as repellant is not recommended for children under the age of two months.

 For more information about West Nile virus and the state™s surveillance and control program, visit www.westnile.state.pa.us.

source: PA Dept of Environmental Protection.

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