A vape-related lung disease that left thousands of people hospitalized this year hasn’t stopped young people from using vaping products.

In a new National Institutes of Health survey, 26% of respondents said they had vaped nicotine. 14% of high school seniors said they vaped marijuana in the previous month. That’s twice the number who said they vaped marijuana products in 2018 and up significantly from 4.9% in 2017.

“We’ve seen [increases] in the past among the three grades, never at this size that we’re observing with vaping,” Dr. Nora Volkow, director of the National Institute on Drug Abuse, told CNBC. “Never.”

The NUH survey is buoyed by another report from Monitoring the Future from the University of Michigan's Institute for Social Research. That survey found 20.8% of 12th graders, 19.4% of 10th graders, and 7% of eighth graders vaped marijuana in the past year.