CDC identifies vitamin E acetate as possible cause of vaping illnesses The Centers for Disease Control and Prevention says it has identified a chemical of concern in the deadly vaping outbreak. Vitamin E acetate, an additive sometimes used in e-cigarette fluids, may play a role in the outbreak that's sickened thousands and killed at least 42 people across the U.S. The CDC's principal deputy director, Dr. Anne Schuchat, joins CBSN with more.