Washington, DC: Updated data provided by the US Centers for Disease Control has identified a total of 1,604 incidents of lung injury related to the use of portable vaping cartridge products, including 34 deaths.
A specific cause of the illness remains unknown, though some experts have speculated that the injuries may be related to additive ingredients in the e-liquid products, such as Vitamin E oil, or the presence of a specific metal-binding agent in certain types of portable cartridges. The agency states that the overwhelming majority of products associated with the illness were obtained via the unregulated "informal" market.
The CDC’s latest advisory concludes: "To date, no single compound or ingredient has emerged as the cause of EVALI (e-cigarette or vaping product use-associated lung injury), and there might be more than one cause. Because most patients report using THC-containing products before the onset of symptoms, CDC recommends that persons should not use e-cigarette, or vaping, products that contain THC. Persons should not buy any type of e-cigarette, or vaping, products, particularly those containing THC, off the street and should not modify or add any substances to e-cigarette, or vaping, products that are not intended by the manufacturer, including products purchased through retail establishments. In addition, because the specific compound or ingredient causing lung injury is not yet known, and while the investigation continues, persons should consider refraining from use of all e-cigarette, or vaping, products."
Additional information is available in the California NORML fact-sheet.