CNN CNN Newsroom Live December 18, 2021 09:14:00
There's a lot of waning immunity, and in the u.k., the u.s. again being very grad ule in its uptake, had still a large proportion of the population with intact immunity to delta so that is certainly an explanation. >> as you kind of referenced how the u.s. handles the omicron must depend on where in the u.s. you live. california, new york, there are already reimposing indoor mask mandates in response in part to that threat so two years into this pandemic, can we conclusively say that these mitigation measures that california for instance used works, that outcomes are measurably better in state...