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Vaping Associated Lung Disease Outbreak

ACMT has partnered with several other medical associations and the Centers for Disease Control and Prevention to work to identify the cause of this outbreak and patient treatment.

The Centers for Disease Control and Prevention (CDC) is working with the Food and Drug Administration, state health departments and public health and clinical partners to investigate the multistate outbreak of lung injury associated with e-cigarette product use, or vaping.

Recent News

CDC released a media advisory: 

Today’s News
For the latest CDC press materials, see the Lung Injury Digital Press Kit.  
  • CDC released a Morbidity Mortality Weekly Report (MMWR)— Update: Interim Guidance for Health Care Providers Evaluating and Caring for Patients with Suspected E-cigarette, or Vaping, Product Use Associated Lung Injury — United States, October 2019

  •  As of October 15, 2019, 1,479 lung injury cases associated with use of e-cigarette, or vaping, products have been reported to CDC from the District of Columbia, one U.S. territory (USVI) and 49 states (all except Alaska).

  • 33 deaths have been confirmed in 24 states.At this time, FDA and CDC have not identified the cause or causes of the lung injuries in these cases, and the only commonality among all cases is that patients report the use of vaping products, including e-cigarettes.
  • No one compound or ingredient has emerged as the cause of these illnesses to date; and it may be that there is more than one cause of this outbreak. 
  • We do know that THC is present in most of the samples tested by FDA to date, and most patients report a history of using THC-containing products.
  • The latest national and state findings suggest products containing THC, particularly those obtained off the street or from other informal sources (e.g. friends, family members, illicit dealers), are linked to most of the cases and play a major role in the outbreak.
CDC recommends that people should not:
  • Use e-cigarette, or vaping, products that contain THC.
  • Buy any type of e-cigarette, or vaping, products, particularly those containing THC, off the street.
  • Modify or add any substances to e-cigarette, or vaping, products that are not intended by the manufacturer, including products purchased through retail establishments.
  • Since the specific causes or causes of lung injury are not yet known, the only way to assure that people are not at risk while the investigation continues is to consider refraining from use of all e-cigarette and vaping products.
  • There is no safe tobacco product. All tobacco products, including e-cigarettes, carry a risk.
  • CDC continues to refine recommendations based on emerging data. New recommendations can be found at:
  • New Laboratory Testing at CDC

    • CDC is now doing additional laboratory testing.
      • CDC is currently validating targeted methods to test chemicals in bronchoalveolar lavage (BAL) fluid, blood, or urine and has received initial samples for testing.
      • CDC is testing pathologic specimens, including lung biopsy or autopsy specimens, associated with patients.
      • CDC is also validating methods for aerosol emission testing of case-associated product samples from e-cigarette, or vaping, products and e-liquids. Initial data from product sample testing has guided the need for these additional assays.
      • Results may provide insight into the nature of the chemical exposure(s) contributing to this outbreak.

    What’s New on the Lung Injury Response Website This Week:

    • Updated case counts, death counts, a map of states reporting cases, and a graph of case counts
    • Updated Laboratory Clinical Sample Submission Guidance and Specimen Submission Guidance for Pathologic Evaluation

    The most up-to-date, publicly available information can be found at:

    If the public has questions, they can contact CDC-INFO at 800-232-4636, or visit