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In this photo taken Sept. 20, 2019, Cameron Moore, general manager of Bridge City Collective in Portland, Ore., holds a vape cartridge that's on sale at the dispensary. The company had a 31% drop in sales of vape cartridges that hold the oil that vaporizes when heated. Vaping products are taking a hit as health experts scramble to determine what’s causing a mysterious lung disease. (AP Photo/Gillian Flaccus)