West Nile virus has been detected in mosquito samples collected in both Chester and Montgomery county this year.
According to the West Nile Virus Control Program website, run by Pennsylvania, Chester County has had four mosquito samples test positive and Montgomery County has had two.
No human cases of West Nile virus have yet been reported for 2014.
Twenty-four counties in the state have registered postive tests for West Nile virus this year, all from mosquito samples.
In Chester County, samples that tested positive were collected from pools in Easttown, Tredyffrin, Uwchlan and West Goshen. In Montgomery County, the mosquito samples that tested positive were collected in Abington.
Area residents are advised to wear insect repellent when working or playing out doors and to reduce mosquito breeding areas around their homes, including old tires and containers where water can pool. Clogged gutters, and swimming pools that are not properly chlorinated can also become breeding grounds for mosquitoes.
For more information about West Nile virus and the state’s efforts to keep the virus in check, visit www.westnile.state.pa.us.