Preliminary data from two long-standing, nationwide surveys reveals a sustained surge in e-cigarette use—aka vaping—by teens over the last two years.

About 25% of 12th graders in 2019 reported using nicotine-containing vaping products within 30 days of taking one of the surveys. That figure was about 21% in the 2018 edition of the same survey and 11% in 2017.