New York City Mayor Bill de Blasio unveiled his 2021 student achievement plan, which will focus on getting students caught up after, for some, 18 months of remote learning.

“Clearly there will be a COVID achievement gap and we have to close that COVID achievement gap,” the mayor said.

Schools Chancellor Richard Carranza said the plan is to: get a baseline of what ground was lost; increase the high-quality digital curriculum available for every single school; launch a one-stop digital learning hub; deepen professional development; expand Parent University (the "online learning and empowerment platform" for families); and confront the trauma and mental health crisis within schools.

ABC News' Aaron Katersky contributed to this report.

In South Korea, more than 3,000 COVID-19 patients were identified in the last week, and in the Seoul area, as of Wednesday 506 were unable to be taken to hospitals this week due to bed shortages, Yonhap reported. 

South Korea reported 682 new cases and eight more deaths on Thursday, the Korea Disease Control and Prevention Agency reported.

The nation now has over 40,000 confirmed cases.

The Vaccines and Related Biological Products Advisory Committee, an independent panel of infectious disease experts, doctors and scientists, is meeting Thursday to recommend if the Pfizer vaccine should be considered safe and effective in the U.S.

Food and Drug Administration Commissioner Stephen Hahn told “Good Morning America” Thursday that he wouldn’t “prejudge” what the advisory committee would vote, but said the FDA will act “quickly” afterward.

“FDA's reviewers are mothers, fathers, brothers, sisters. We totally understand the urgency of this situation, and we are working around the clock on behalf of America,” Hahn said. “FDA scientists are known around the world for their expertise. We are a regulatory gold standard for the authorization or approval of medical products, including vaccines. We intend to do and we have done a very thorough review to get this right, to get all the answers we possibly can from the data.”

Hahn also said the FDA was “working very closely with our U.K. partners” after two people who received the vaccine in the U.K. had severe allergic reactions.

Hahn told NBC that it was “possible” that the FDA could advise people with significant allergies to not get the vaccine.

Hahn said the allergy issue would be discussed at Thursday’s meeting but added that the FDA stands by “our initial assessment” that Pfizer’s vaccine “does meet our criteria.”

ABC News' Ben Gittleson contributed to this report.

Just as the U.S. surpassed 280,000 deaths from coronavirus on Saturday, Dec. 5, the country is likely to pass 290,000 deaths later today.

The current death toll stands at 289,373, according to the latest data compiled by Johns Hopkins University.

This comes on the heels of new records reported yesterday in highest single-day total and seven-day average of new daily deaths -- 3,054 and 2,276 respectively -- according to The COVID Tracking Project.

ABC News' Ahmad Hemingway contributed to this report.

Nevada Gov. Steve Sisolak extended his state's coronavirus restrictions through at least Jan. 15 as COVID-19 cases and deaths surge in the Silver State.

Nearly every state in the U.S. reports more than 100 people hospitalized per million, according to the COVID Tracking Project. However, Nevada reports 592, which translates into one out of 1,700 people in the state, according to the project.

"We continue to see an increase of hospitalizations statewide with almost 1,700 Nevadans battling COVID as of Friday," Sisolak said at a press conference Sunday.

The governor also announced Sunday that he would sign an order to place a moratorium on most residential evictions in Nevada.

Since the start of the pandemic, Nevada has had more than 186,000 cases, with at least 2,529 deaths.