your actions could lead to the deaths of thousands of individuals because people trust what doctors say. >> reporter: batar doesn't seem to care. >> you had an outsized influence over somebody living just down the street in terms of people getting medical advice, you have to admit that. >> absolutely i did. >> you are raising doubts about a vaccine. >> i hope i am because i hope more people take heed of the warning that is necessary. >> if you are wrong and they die because of that? >> i am confident, more than confident in my ability to have looked at the data and observed what is going on and that if i'm wrong, so be it because i have to look at myself in the mirror every night when i go to bed and every morning when i get up. i don't lose any sleep, drew. >> drew griffin joins me right now. drew, incredible and unrestricted medical license. i have got to know why he still has one. drew is going to answer all of