MSNBC All In With Chris Hayes December 9, 2021 01:24:00
Studies, really exploding new knowledge. we don't have anything on t-cells yet, but what we do have is the antibody response. so-called neutralizing antibody. at least 25-fold to 40-fold increase with the booster. that's the amount of reduction that's occurring with omicron. omicron has this feature of immune escape which is because of all of its mutations in key sites of the virus. so the good thing as dr. fauci said in your opening here is that we can get omicron effectiveness back with a vaccine with this third shot. so it's encouraging. as you said, this is a new variant and we don't have ...