>> it's manufactured in asia smuggled into the u.s. >> the centers for disease control size thc oil cartridges may be driving the nationwide outbreak of e-cigarette or vaping products associated lung injuries. fifty-two have died from them and 4200 hospitalized. 80% of patients reported using thc in these products. >> how long have they been vaping? >> maybe a few times. >> these are the lungs of one of his patients. >> these are blood vessels there, there, there. the thing that alarms me the most us like cigarette smoking, your first time could be the time you get sick. >> volunteers are maki...