People who both smoke and vape have lower odds of quitting nicotine UPI.com E cigarettes a tool to reduce inequalities in smoking? UCL Institute of Epidemiology and Health Care Blog The really interesting thing we found was that vaping may also encourage people who don't even want to stop smoking, to eventually quit Dr Caitlin Notley University of East Anglia People who smoke or vape at higher risk for COVID 19 E cigarettes increase harm to smokers, so should not be promoted as a harm reduction strategy (in 10 slides) Stanton Glantz blog The Call to Action E Cigarette Use Among Youth and Young Adults NCBI Bookshelf