Vaping Q&A: Johns Hopkins Expert on E Cigarettes and Tobacco Alternatives Johns Hopkins Bloomberg School of Public Health Public health expert discusses the dangers of vaping and e cigarettes Hub Bloomberg School of Public Health Teaching & Research Additions Ziger Snead Architects Vaping MouthHealthy Oral Health Information from the ADA New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Johns Johns Hopkins Bloomberg School of Public Health