As the stories airing this week on West Virginia Morning illustrate, West Virginia is in the midst of a heroin epidemic. According to the state Department of Health and Human Resources' Drug Overdose Database, heroin has claimed the lives of more than 600 West Virginians since 2001. But what else can we glean from this information? When did it all begin? And which counties are seeing the highest rate of deaths related to heroin overdoses? The interactive map below paints a dark picture of the state's problem with the drug in recent years and also shows other key facts as medical professionals, emergency officials, law enforcement officers and lawmakers all attempt to find solutions.