E-cigarette unit sales, by product and flavor type \u2014 United States, 2014\u20132020

What is already known about this topic? Since electronic cigarettes (e-cigarettes) entered the U.S. marketplace in 2007, the landscape has evolved to include disposable e-cigarettes and rechargeable e-cigarettes with prefilled cartridges and flavored e-liquids (e.g., fruit, candy, and mint).What is added by this report? During September 2014\u2013May 2020, e-cigarette sales increased by 122.2%. Sales of prefilled cartridges increased during September 2014\u2013August 2019; since then, sales of disposable products have increased. Prefilled mint cartridge e-cigarette sales increased from September 2014 to August 2019, then decreased, as menthol sales increased during August 2019\u2013May 2020.What are the implications for public health practice? Continued monitoring of e-cigarette sales and use is critical to inform strategies to minimize risks. As part of a comprehensive approach, such strategies could include those that address youth-appealing product innovations and flavors.Since electronic cigarettes (e-cigarettes) entered the U.S. marketplace in 2007, the landscape has evolved to include different product types (e.g., prefilled cartridge\u2013based and disposable products) and flavored e-liquids (e.g., fruit, candy, mint, menthol, and tobacco flavors), which have contributed to increases in youth use (1,2). E-cigarettes have been the most commonly used tobacco product among U.S. youths since 2014; in 2019, 27.5% of high school students reported current e-cigarette use (3). To assess trends in unit sales of e-cigarettes in the United States by product and flavor type, CDC, CDC Foundation, and Truth Initiative analyzed retail scanner data during September 14, 2014\u2013May 17, 2020, from Information Resources, Inc. (IRI). During this period, total e-cigarette sales increased by 122.2%, from 7.7 million to 17.1 million units per 4-week interval. By product type, the proportion of total sales that was prefilled cartridge products increased during September 2014\u2013August 2019 (47.5% to 89.4%). During August 2019\u2013May 2020, the proportion of total sales that was disposable products increased from 10.3% to 19.8%, while the proportion that was prefilled cartridge products decreased (89.4% to 80.2%). Among prefilled cartridge sales, the proportion of mint sales increased during September 2014\u2013August 2019 (<0.1% to 47.6%); during August 2019\u2013May 2020, mint sales decreased (47.6% to 0.3%), as menthol sales increased (10.7% to 61.8%). Among disposable e-cigarette sales during September 2014\u2013May 2020, the proportion of mint sales increased (