Transcript for Biden pushes new COVID-19 plan, world leaders congratulate him
the news this Monday night, President-Elect Joe Biden today making it clear the pandemic is his top priority, pleading with Americans to wear masks, saying they are not a pal statement. He said, it is a way to help protect our fellow Americans, our neighbors M and news on world leaders now reaching out to the President-Elect and the phone call from former president George W. Bush. Here's Mary Bruce again tonight. Reporter: President-Elect Joe Biden making it clear the work begins today, with the pandemic his first order of business. Applauding the vaccine breakthrough, but warning covid's worst wave is yet to come. There's a need for bold action to fight this pandemic. We're still facing a very dark winter. Reporter: Biden today briefed by his new coronavirus task force led by former Obama surgeon general vek Murthy, David Kessler, who ran the fda under George H.W. Bush and bill Clinton and Dr. Marcella nunez-smith, a professor of public health at Yale. We'll follow the science. We'll follow the science. Let me say that again. And we'll adjust to new data when it comes in, and we'll listen and work in cooperation with governors and local leaders of both parties. Reporter: He also implored every American to do their part. It doesn't matter who you voted for. Where you stood before election day. It doesn't matter your party, your point of view. We can save tens of thousands of lives if everyone would just wear a mask for the next few months. Not Democrat or Republican lives, American lives. Reporter: Biden returning to the central theme of his campaign, unity. A message he emphasized the night he won. For all those of you who voted for president trump, I understand the disappointment tonight. I've lost a couple times myself. But now, let's give each other a chance. It's time to put away the harsh rhetoric, lower the temperature, see each other again, listen to each other again. Reporter: The new team, a sign of change in America. While I may be the first woman in this office, I will not be the last. Because every little girl watching tonig sees that this is a country of possibilities. Reporter: World leaders today coming forward to embrace the new administration. From close allies of president trump, like the crown prince of Saudi Arabia and the uk'soris Johnson -- I really congratulate President-Elect Biden and kamala Harris. Reporter: To the mayor of Paris, who tweeted, "Welcome back, America." And Canada's Justin Trudeau, who spoke with Biden today, and tweeted, "We've worked with each other before and we're ready to pick up on that work and tackle the challenges and opportunities facing our two countries." And Mary, we know Justin Trudeau said he's eager to start working with the more administration and covid and climate. And President-Elect Biden has a number of moves planned for day one? Reporter: David, Biden has a lengthy to do list, including undoing some of president trump's most controversial moves. He will overturn the so-called Muslim bam. David, they have a lot of work All right, Mary B wits on a Monday night. Mary, thank you.
This transcript has been automatically generated and may not be 100% accurate.