We get the latest on a possible breakthrough in the vaping crisis. The CDC has now identified a toxin that may have caused the deaths of 39 people and illnesses tied to them throughout the country. Linsey Davis has details. Reporter: For several months now we've been reporting on this mysterious illness in people who smoke e-cigarettes. Well, now U.S. Health officials are describing the findings as a breakthrough suggesting vitamin E acetate may be the culprit. A possible breakthrough this morning involving the investigation into the outbreak of vaping-related illnesses and deaths. Vitamin E acetate is a potential toxin of concern calling it a strong culprit. The chemical compound was found in 29 biologic samples from patients with lung injuries associated with thc and vaping products including Zane martin, who is 15. Don't vape unless you want to end up in the hospital. Reporter: Although it's used in lotions and supplement, inhaling the oil-like substance can be dangerous. It's important to understand that inhalation should be inhalation of air and not substances. Especially oils because oils produce inflammation, pneumonia and over time with repeated use cause respiratory failure and death. Reporter: Scott Becker, the director association of public health laboratories says this investigation has been very challenging because there are so many different constituents and things that are in this product. It's been like looking for a need until a haystack. I think with the latest announcements from the CDC we're getting much closer. The CDC says the priority now is animal at this timing to learn definitively if vitamin E