https://www.cdc.gov/tobacco/basic_in...g-disease.html
Among 578 patients with information on substances used in e-cigarette, or vaping, products in the 3 months prior to symptom onset:
-About 78% reported using THC-containing products; 37% reported exclusive use of THC-containing products.
-About 58% reported using nicotine-containing products; 17% reported exclusive use of nicotine-containing products.