Henriksen, Johnson, and Schleicher were co-authors of a study that looked at promotional strategies, products, and compliance with regulations among vape shops in Atlanta, Boston, Minneapolis, Oklahoma City, San Diego, and Seattle in 2018 and 2021. They found that with increasing restrictions, fewer shops sold their own e-liquid brands or accommodated on-site use/sampling, but fewer also posted minimum-age signage; more offered cannabis-related products. “These changes underscore the need for comprehensive surveillance to assess regulatory impact,” the authors concluded. Read the paper.