A handful of studies suggest that adolescent e-cigarette use dropped substantially during the pandemic. Prior to 2020, the number of teens vaping had been on the up, doubling between 2017 and 2019, according to a survey by Monitoring the Future, which is funded by the federal government and administered by the University of Michigan. In that survey, 16% of 8th graders, 30% of 10th graders, and 35% of 12th graders reported vaping 2019. Another annual survey of teens, the federal National Youth Tobacco Survey, also found in 2019 that more than a quarter of teens vaped in the 30 days prior to taking the survey. This year, however, 11% of high school students and 2.8% of middle school students reported currently using e-cigarettes in the National Youth Tobacco Survey. That marks a significant drop from peak use in 2019 and from 2020 when the survey found that nearly 20% of high schoolers and 5% of middle schoolers were vaping. Researchers from Stanford have found that teens who used e-cigarettes were at greater risk of getting sick from the coronavirus, likely because vaping damaged their lungs. Other research has found that e-cigarette use can lead to smoking traditional cigarettes.