There have been no human cases of West Nile Virus so far this year in northcentral Pennsylvania, but one mosquito pool has tested positive for the disease in Lycoming County and one in Northumberland County, according to the state Department of Health.
The department on Monday announced the discovery of two human cases in the state, one in Montgomery County and the other in York County.
The Montgomery County man was treated at a hospital and released, officials said, while the York County man was not hospitalized.
So far, the state Department of Environmental Protection has detected West Nile virus-infected mosquitoes in 36 counties.
Besides the positive mosquito samples in Lycoming and Northumberland County, four mosquito pools tested positive in Union County, according to the department.
No pools tested positive in Potter, Bradford, Tioga, Susquehanna, Clinton or Sullivan counties.
Four birds have tested positive for the disease statewide.
The mosquitoes that transmit the virus breed in areas with standing and stagnant water, including urban catch basins, clogged gutters, discarded tires, poorly maintained swimming pools, flower pots and other types of plastic containers.
Although mosquitoes may bite at any time of day or night, they are most active at dawn and dusk.
When outdoors, people can avoid mosquito bites by properly and consistently using insect repellants and covering exposed skin with lightweight clothing. To keep mosquitoes from entering a home, make sure window and door screens are in place and are in good condition.
DEP will continue to survey affected communities to monitor the size and scope of the West Nile and when necessary, conduct larval and adult control activities to lessen the threat to human health through October.
For more information, including current test results for mosquitoes, birds and horses, go to www.westnile.state.pa.us and click on the Pennsylvania map, or call 1-877-PA HEALTH.