brierre: yes, sir.liam: seeing this large number of unvaccinated people coming through your doors, is that frustrating to you? and is it just -- you just think, that's just the way our society is? like, how do you square that? dr. brierre: i try not to dwell on it too much. william: why not? dr. brierre: because it does frustrate. there is a little bit of we shot ourselves in our foot. i'm not mad at people who didn't vaccinate. and i understand a lot of it. i mean, there was so much misinformation out there. and the country is so polarized, -- polarized. robert: until it affects you personally, you don't know. now i know. william: in one of those in-demand hospital beds is robert wilson, a 49-year-old who contracted the virus last month. he wasn't vaccinated. robert: it wasn't political. it just -- i didn't figure i was going to need it, because nobody really knows the long term of this vaccine, and people are scared of it. william: so, that was your concern? that you might take the shot, and it might

brierre isack upstairs in the i.c.u. just over a month ago, there were 10 covid patients in the hospital. the day we visited, there were 129. it's a surge that's caught dr. brierre somewhat by surprise. >> i thought we were close to done. i knew delta was going to be a little bit of a surge, especially in louisiana, given our low vaccination rates. but i had no idea that the impact would be almost as severe as the first surge that we saw. >> brangham: more than 60% of people in louisiana are not fully vaccinated, and that's overwhelmingly who's ending up in this hospital with covid. of those 129 hospitalized covid patients, nearly 90% are unvaccinated. and, doctors believe, in part because of the delta variant, patients may be getting sicker, faster. >> we're certainly seeing a group of people, not all of them, but a group of them in the i.c.u. who rapidly deteriorate. so people that we would have thought we would have been able to support without a ventilator for a week or two to get them through it. we're running to th