The hundreds of illnesses and seven deaths across at least 38 states have officials racing to figure out what’s going on with certain vaping products. WaPo: Vaping-related illnesses surge as FDA discloses criminal probe. “Officials said they still do not know the cause of the lung injuries that are making people so sick.”

+ NPR: The Vaping Illness Outbreak: What We Know So Far

+ Time: How Juul Hooked Kids and Ignited a Public Health Crisis.