In the report published Tuesday, investigators at the Minnesota Department of Health analyzed products containing THC, marijuana’s psychoactive ingredient. Twenty product samples obtained from vaping illness patients contained vitamin E acetate, while 10 products gathered a year ago — before the outbreak was reported — did not contain vitamin E.
https://www.nbcnews.com/health/vaping/further-evidence-links-vitamin-e-oil-vaping-illnesses-n1091891