Investigators still don't know why hundreds of people have gotten sick and some people have died from vaping. Some were vaping with nicotine, THC or both. However, the Michigan Department of Health ...

Samples of lung fluid from patients with the mysterious illness led to a breakthrough in finding a possible cause. More than 2,000 people have been sickened, many from illicit marijuana-based products ...

Health officials around the country are still investigating numerous possible causes and have tested only some of the devices used by ill patients. By Matt Richtel Health officials in New York State ...