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 August 01, 2017 - More West Nile Virus-infected mosquito samples found in Dauphin County

HARRISBURG, PA (August 1, 2017) – The Dauphin County Conservation District has collected more mosquito samples infected with West Nile Virus (WNV), bringing the total number of positive samples to 25 for the year. The most recent positive samples were collected in late July in the City of Harrisburg, East Hanover Township, Halifax Township, Highspire Borough, Paxtang Borough and Washington Township.
Infected mosquitoes were also found earlier this summer in the City of Harrisburg, Highspire Borough, Lykens Borough, Susquehanna Township, Swatara Township and Wiconisco Township. No human cases of WNV have been reported in Dauphin County.
The county’s WNV Control Program, which is overseen by the Conservation District, is increasing surveillance and control measures to reduce the mosquito population and prevent the virus from spreading.
Certain species of mosquitoes carry WNV, which, when transmitted to people, can cause West Nile encephalitis, an infection that can result in an inflammation of the brain. According to the Centers for Disease Control and Prevention (CDC), all residents of areas where virus activity has been identified are at risk of getting West Nile encephalitis. 
The following precautions are recommended:
  • Buy products with Bti (Bacillus thuringiensis israelensis)--a naturally-occurring bacteria that kills mosquito larvae but is safe for people, pets and plants--for stagnant pools of water in the lawn and garden.
  • Remove any standing water in pots, containers, pool covers, tires, wheelbarrows, wading pools, roof gutters and other containers that hold water.
  • 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.
  • Reduce outdoor exposure at dawn and dusk during peak mosquito periods, usually April through October.
  • Use insect repellents according to the manufacturer’s instructions. An effective repellent will contain DEET, picaridin or oil of lemon eucalyptus. Consult with a pediatrician or family physician if you have questions about the use of repellent on children, as repellent is not recommended for children under the age of two months.
To learn more about WNV and prevention, visit the CDC’s Web site at  For more information about Dauphin County’s WNV Control Program, contact Christopher Hooper, program coordinator, at 717-921-8100.

Category: Dauphin County
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