At least 530 people in 38 states have been sickened by and seven died from a vaping-related lung illness, but it still is unclear what is causing the malady, officials at the Food and Drug Administration and Centers for Disease Control and Prevention said Thursday.
The two federal agencies are conducting parallel investigations to determine if the illness is related to legal vaping products as well as those available on the black market. To encourage information sharing on purchase of illicit products, FDA investigators from the Office of Criminal Investigations said they are not pursuing any prosecutions.
