More underage and young adult e-cigarette users reported reducing or quitting e-cigarettes since the COVID-19 pandemic began than those who reported increasing their use or switching to other nicotine and cannabis products. Researchers conducted a national cross-sectional anonymous online survey study of 4351 participants in May 2020, including 2167 youth and young adults who use e-cigarettes. [...] The researchers surveyed participants aged 13 to 17 years, 18 to 20 years, and 21 to 24 years, with a 50:50 ratio of ever-e-cigarette users to never-e-cigarette users through Qualtrics. [...]