to vaping. the new details from the cdc that show new york state health officials are zeroing in on a chemical that could be making those who vape sick. cnn s dr. sanjay gupta has more. these numbers are hard to believe. they keep going up. the number of people hospitalized in a number of states. it s interesting, when you talk about the typical patient. oftentimes, they are young, they are healthy and then they are suddenly sick. take a look at the symptoms that they develop. respiratory symptoms, g.i. symptoms, fever, headaches, weight loss, so many people getting sick, so many getting hospitalized as a result of this. it s an ongoing investigation. at first you have people getting ill. what do they have in common? they all seem to have vaped? what is it about the vaping in particular that could be using the problem.