To prevent e cigarette, or vaping, product use associated lung injury (EVALI), people should not use THC containing e cigarette, or vaping products, particularly from informal sources. Data suggest e cigarette, or vaping, products that contain THC What in Known About EVALI: Diagnosis of the Acute Lung Injury Associated With Vaping Update: Characteristics of a Nationwide Outbreak of E cigarette, or Vaping, Product UseAssociated Lung Injury United States, August 2019January 2020 MMWR E cigarette, or vaping, product use associated lung injury (EVALI): case series and diagnostic approach The Lancet Respiratory Medicine E cigarette or vaping associated lung injury (EVALI) EMCrit Project