CNN CNN Newsroom With Jim Acosta December 4, 2021 20:40:00
Frieden joins me now. the director says that variant could become dominant in the u.s. that is concerning considering how much trouble we've had with delta. we know that in south africa, covid cases are up 300% since this new variant was detected. are you concerned about this? >> jim, the plain truth is that it's shaping up to be a bad winter. delta is bad and omicron could well be worse. we've already got lots of delta in the u.s. lots of spread. increasing in many places. flu season starting and now the risk that omicron will be here widely spreading and there's a lot that we still don't kno...