A survey conducted by the Centers for Disease Control and Prevention (CDC) has reported that 27.5% of high school students used e-cigarettes in the past 30 days compared to 20.8% in 2018. The report also highlights that fruit, menthol and mint flavours were popular, with 60% of teen vapers using these flavours.

Source: https://www.cnbc.com/2019/09/12/cdc-says-teen-vaping-surges-to-more-than-1-in-4-high-school-students.html