Cold weather eases West Nile concerns after active season

Written by Craig Layne and Radio Pennsylvania | Dec 7, 2012 4:00 AM

(Harrisburg) -- As colder weather tamps down the threat of West Nile Virus by killing mosquitoes that carry the disease, the commonwealth's latest report on the illness shows the midstate has been a hotbed for the disease.

For the second year in a row, York County had the highest number of mosquitoes infected with the virus, at 369.

Adams and Lancaster counties took the second and third spots.

Department of Environmental Protection spokeswoman Amanda Witman says anti-mosquito spraying and other programs kicked into action as soon as the first cases popped up in May.

"When we detected high levels of the virus in any given area, whether or not there was a human positive in that area, we would go in and conduct a control activity," Witman says. "That began months before we even saw our first human case."

At eight cases apiece, Lancaster County tied with Philadelphia for the most human infections of West Nile in the commonwealth.

The state saw 49 human cases this year, up from only six in 2011.

Four people died from the disease, including a man from Berks County.

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