make a difference. politicians will make a difference. i hope so. but i actually think it's a bit too late for that. i think we need to take a lot more dramatic action, in the form of proof of vaccination and, ultimately, vaccine mandates. >> quick-bounce question to you, dr. wen. 49% of people in a recent poll who haven't taken the vaccine said it being fda approved would help them with that. my man, d lemon, went bad on me, on that argument, last night. he is like, oh, they don't understand. it's about efficacy, not approval. i said, yeah, but anything that has approval must have efficacy. he goes, oh, no, it can have efficacy and not be approved. i said i know but if it is approved, it must have efficacy and that gives people comfort. do you agree? >> i do. i think the full approval will make a huge difference, for two reasons. one is that there are some people who call this vaccine experimental. obviously, it's not experimental. it's been given to hundreds of millions of people. it's just fine. it should be, frankly, approved, at this point. but taking -- but having full