(Steven Senne | AP file photo) A high school student uses a vaping device near a school campus in Cambridge, Mass. A new study released Wednesday, Sept. 18, 2019, found another jump in how many U.S. teens vape nicotine-tinged electronic cigarettes. About 25% of high school seniors surveyed this year said they vaped nicotine in the previous month, up from about 21% the year before.