Leslie Kohman, MD (photo by Jim Howe) Leslie Kohman, MD (photo by Jim Howe) The cause of a multi-state outbreak of vaping-related pulmonary injuries is unknown, with more than 800 cases reported and several deaths. The The cause of a multi-state outbreak of vaping-related pulmonary injuries is unknown, with more than 800 cases reported and several deaths. The U.S. Centers for Disease Control and Prevention U.S. Centers for Disease Control and Prevention says there is no evidence that the occurrence of vaping-related lung disease is declining. Upstate thoracic surgeon says there is no evidence that the occurrence of vaping-related lung disease is declining. Upstate thoracic surgeon Leslie Kohman, MD Leslie Kohman, MD, describes the symptoms of this mysterious disease and explains some of the theories about its cause. She also reviews other health risks associated with vaping, or inhaling a vapor that is usually high in nicotine, often flavored and contains unknown, potentially harmful ingredients., describes the symptoms of this mysterious disease and explains some of the theories about its cause. She also reviews other health risks associated with vaping, or inhaling a vapor that is usually high in nicotine, often flavored and contains unknown, potentially harmful ingredients.