In 2000, the West Nile Virus appeared for the first time in Pennsylvania in birds, mosquitoes, and a horse. To combat the spread of West Nile virus, which is transmitted by mosquitoes, Pennsylvania has developed a comprehensive network.
Pennsylvania Department of Environmental Protection
For additional information, please visit the Pennsylvania Department of Environmental Protection website (which covers 40 counties), including trapping mosquitoes, collecting dead birds and monitoring horses, people, and, in past years, sentinel chickens.
Please explore the following documents to find out more about how you can help, to learn about the West Nile virus, or the latest surveillance update from your area: