hesitancy that people see this news and say, see? what if the vaccine didn't work in the first place. what do you say to those holdouts? this is why you have to be vaccinated. >> exactly. i say, hold on. i did my round of calls and texting to family, friends, people that i knew were not vaccinated. i said, look, this is another opportunity for you to consider what's causing you to hold back and to delay on getting vaccinated. we're entering the winter months. we know in the winter months we see spikes. we don't know how much of a spike we'll see here in the u.s., but with the emergent of now this variant is just more concern for those unvaccinated or partially vaccinated to get the shot. >> the timing of this is unfortunate. just when we thought we could breathe a sigh of relief and have somewhat normal holidays, here we are. do you think people should be changing their plans over the next several weeks and months here? do you think people should, for instance, stop traveling?