We recently covered the troubling incidents of illness, lung injury, and potential fatalities associated with vaping. Initial reports suggested that additives, such as Vitamin E Acetate, triggered immune system reactions and other symptoms that lead to serious medical problems.

Now the Centers for Disease Control and Prevention (CDC) has officially linked Vitamin E Acetate to the reported health problems.

U.S. health officials finally have a potential breakthrough in the vaping illness outbreak that’s killed at least 39 people, narrowing in on vitamin E acetate as a “potential toxin of concern,” Centers for Disease Control and Prevention officials said Friday.

The compound used in supplements, cosmetics and some vaping products was detected in all 29 lung tissue samples from patients health officials tested, Dr. Anne Schuchat, the CDC’s principal deputy director, told reporters on a conference call.

“We have a potential toxin of concern from biological samples in patients,” Schuchat said. “We are in a better place than we were a few weeks ago in terms of finding a culprit.”

Vitamin E Acetate is an oil that is often used quite safely in creams and cosmetic products. However, when it is heated and inhaled, it causes chemical burns to the sensitive tissues of the respiratory system.