Well, now he started to provide details of how he intends to do so.

The president elect says he'll ask all Americans to wear face masks for his 1st 100 days in office.

On will order masks to be worn in all U.

S.

Government buildings on on public transport.

Mr.

Biden also confirmed he's asked the top infectious disease expert, Anthony Fauci, to remain as chief medical adviser.

Here's our Washington correspondent level.

DeCecco California readying for its strictest stay at home order.

Yet the governor, warning that the state is at a tipping point which could see hospitals overwhelmed California has seen a record surge in new cases more than 19,000 on Wednesday alone, the toll in this one state, reflecting the battle the whole country faces.

Figures reported on Thursday, showed that in just 24 hours the US broke every single record since the pandemic began.

The highest ever new infections, hospitalizations on a life lost nearly every 30 seconds for President elect Joe Biden.

There's one measure he'll take straight away, as he told CNN's the lead with Jake Tapper.

On the first day I'm inaugurated to say I'm gonna ask the public for 100 days to mask just 100 days to mask not forever 100 days.

He said that in conjunction with vaccines could make a lot the difference.

Once, Fauci says, It's clear that's that's my measure, then obviously we take it.

It's important to communicate to the American people.

It's safe.

It's safe to do this.

Mr.

Biden said he'd keep the country's top infectious disease expert in his current job as well as making him chief medical adviser.

But on Thursday, Dr Fauci was at the center off a different controversy after telling US networks that the UK had rushed it's vaccine approval.

On Thursday, he walked those comments back, telling the BBC he was sorry it came out wrong and that was not the way I meant it to be.

In the United States, there is such a considerable amount of tension, of pushing back on the credibility of the safety and of the efficacy that if if we in the United States had done it as quickly as the UK did, and that's no judgment on the way the U.

K did it there likely would have been pushed back.

Some now fear the debate over which country has a better regulatory system could make people wary of immunization.

More than 1.5 million people have now died from the virus worldwide.

Nearly 20% of those are in the U.

S label.

DeCecco BBC News, Washington.