CDC, the U.S. Food and Drug Administration (FDA), state and local health departments, and other clinical and public health partners are investigating a national outbreak of e-cigarette, or vaping, product use-associated lung injury (EVALI).

Syndromic dataexternal icon on emergency department (ED) visits suggest that the e-cigarette, or vaping, product use-associated lung injury (EVALI) outbreak began in June 2019. Cases have been declining since a peak in September.

• These data align with recently released CDC national epidemiologic data among EVALI patients suggesting that the number of new hospitalized EVALI cases has also been declining since a peak in September.
• While ED visits associated with possible EVALI have declined, they have not returned to levels before June 2019 and EVALI remains a concern.