From northcarolinahealthnews.com
Doctors at the WakeMed Raleigh campus saw three relatively young adults come in within a week of each other this summer, all struggling to breathe and with no other obvious signs of what could be causing their distress, said Kevin Davidson, one of the critical care pulmonologists at WakeMed, in an interview with N.C. Health News.

Good reporting from the hospital to the CDC, and excellent reporting from nchealthnews.org. We will talk about this on Heart Health Radio this week.
All three patients told doctors they recently vaped some form of Tetrahydrocannabinol (THC), the active compound in marijuana that leads to the characteristic high. Davidson and his colleagues quickly realized there may be a danger that stretched far beyond the treatment rooms of the Raleigh hospital.