Teenagers’ e-cigarette use declined this year, according to an influential annual survey, marking a positive trend that health officials say still leaves the number of users too high.

In 2020, 19.6% of high-school students and 4.7% of middle-school students said they vaped, according to the National Youth Tobacco Survey, [...] “Although the decline in e-cigarette use among our nation’s youth is a notable public health achievement, our work is far from over,” CDC Director Robert Redfield said in a statement. About 3.6 million youths reported using e-cigarettes within the prior 30 days, down from 5.4 million in the 2019 survey.