joining the cdc and medical association, flat out telling people not to use ecigarettes, it's a huge deal, the warning comes after a sixth person died from lung disease related to vaping. >> tom foreman has been covering the story. this is a definitive warning. they are clearly trying to get ahead of us. >> the vaping business has been absolutely exploding for years now, particularly among younger people. now you see the warnings coming out, you look at the different agencies saying there is something we should be considering about this this does not look good, the cdc, american lung association all say something is going on and we're worried. this is the reason why. look at this map, the cdc has looked at the prevalence of this and these problems, these mysterious lung illnesses showing up in people who have been vaping. all those states reported these