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Dropped all across the country, and as a result, drenlt anthony fauci warns the u.s. could see a rise in covid cases, but it's too soon to know for sure. there is a new sub variant of omicron that's spreading in the u.s. >> it's already causing most new covid infections in europe and the uk, but even though it appears to be even more transmissible than omicron, it's not clear if it is more severe. cnn's senior medical correspondent elizabeth cohen joins us now. elizabeth, what do we know about this and what does it mean for the u.s.? >> alisyn, when you look at the new cases, you see a very di...

The moment amongst over 70s, which is as we would expect to see a little spike as this variant takes hold, but there is no evidence yet that it's any more avirulent than omicron. so as long as our vaccinations are still working, there's obviously a danger of the third dose now beginning to wear off and some of the older people who got it first, and they'll be talking about bring forth that fourth wave, but the new sub variant, we always have a few days of tension, we've seen it time and time again, the hope is obviously that it will turn out to be no more transmissible the end omicron and omic...

Its first two covid deaths in over a year. shanghai disneyland has closed its gates starting monday amid the news. the chief executive carrie lam spoke of easing restrictions despite thousands of new daily cases. travel bans on flights from nine different countries will expire april 1st with businesses and schools set to reopen later next month. and in the united states, health experts are preparing for a possible uptick in covid infections largely driven by a highly transmissible sub variant of omicron. polo sandoval has more. >> reporter: on sunday, two top biden administration officials a...

Of failed attempts by quite a number of failed attempts by quite a number of american administrations to rein in the north korean nuclear and missile programmes and none of them have succeeded, so i am not surprised that they are slamming their foot down on the accelerator and trying to get their nuclear programmes and their intercontinental ballistic missile programmes is far advanced as fast as they can. programmes is far advanced as fast as they can-— as they can. thanks for that, kori schake. well. _ as they can. thanks for that, kori schake. well, we _ as they can. thanks for that, kori...

But also the sub—variant of 0micron which we know is, on the one hand, more infectious, but on the other hand we know that our vaccines workjust as well against this sub—variant. taking all of that into account, of course we keep the data under review, but there is no particular cause for concern at this point. that was a uk's health secretary sajid javid. hong kong's leader, carrie lam, has announced an easing of covid restrictions — from next month. these include ending the ban on flights from nine countries, and reducing hotel quarantine from 1a days to seven. schools will resume face...