Pennsylvania is having its worst outbreak of West Nile Virus in 15 years. The state Department of Environmental Protection found more than 46-hundred positive samples of the virus in mosquitoes this year--the most since the virus first turned up in Pennsylvania in 2000. There were 72 human cases reported across the state and three deaths-- one each in Lebanon, Lancaster, and Westmoreland counties. The DEP's Neil Shader says this was the second highest number of human cases reported--but it's far less than the 237 cases in 2003. He says work includes spraying to control mosquito populations, and educating people on how to protect themselves from the virus.