Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US Health Officials Make 'Breakthrough' in Mysterious Vaping Illness VOA News U.S. health officials say they have found the likely cause of a mysterious illness in people who smoke e-cigarettes, describing the findings as a "breakthrough." Anne Schuchat of the Centers for Disease Control and Prevention said Friday that a compound known as vitamin E acetate is a "very strong culprit" in the search for the cause of the mysterious lung disease. Schuchat, who is the CDC's principal deputy director, said the compound was found in fluid samples taken from the lungs of 29 patients across the country who were diagnosed with the vaping illness. "We are in a better place in terms of having one very strong culprit," she said. Schuchat cautioned that more work needs to be done to confirm that vitamin E acetate causes lung damage when inhaled, and said there could still be other toxic substances in e-cigarettes that lead to lung disease. More than 2,000 Americans who smoke e-cigarettes have gotten sick since March, and at least 40 of them have died. .