Dr. Anthony Fauci warned Monday that the United States could run out of beds and nurses as COVID-19 cases go up.

"It is really conceivable that if we don’t turn around the trajectory that that will happen," Fauci said during an interview on the PBS NewsHour.

Fauci, the nation's top expert on infectious diseases and a leading member of the current White House coronavirus task force, also said that families that are gathering for Thanksgiving with those outside their household are putting themselves at risk.

"We really can do something about it if we adhere to the public health measures," he said. "It’s within our power to do something about it."

Los Angeles County Director of Public Health Barbara Ferrer announced the county will shut down in-person restaurant dining starting Wednesday as cases continue to rise.

The county recorded 6,124 new cases and eight new deaths Monday, according to the local Health Department. There are 1,473 patients currently hospitalized with COVID-19 in L.A. County, the Health Department said.

Eateries and bars will be able to offer take-out options, according to Ferrer. The order will be in effect for at least three weeks, she said.

The Los Angeles County Board will meet Tuesday to discuss further shutdown measures. If the five-day case average is 4,500 or higher, a more restrictive stay-at-home order will be issued for three weeks.

"The problem is, we have such a high rate of transmission and so many people are infected that it will take a lot to get us back down," Ferrer said.

Maryland Gov. Larry Hogan announced his state will launch an education campaign and additional enforcement action this week, as the state sees a surge in COVID-19 cases.

Maryland has seen 19 straight days with over 1,000 new daily cases recorded, Hogan said. The positivity rate is 6.8%, hospitalizations have increased by 80% in the last two weeks, and  29 hospitals are at 90% capacity, according to the governor.

Federal and state officials have announced they will enforce compliance rules over Thanksgiving. A wireless alert will be send out on Wednesday that reminds the public about the pandemic and the state's enforcement.

"Following the public health directives is the only way we will be able to stop this virus, keep Maryland open for business, and keep hospitals from overflowing," Hogan said in a statement.

The Buffalo Bills announced that one of their players would be out for the rest of the season due to a heart issue brought on by the coronavirus.

The team tweeted that a cardiologist discovered tight end Tommy Sweeney had myocarditis, an inflammation of the heart, which was connected to COVID-19.

Sweeney was placed on the team's reserve/COVID-19 on Oct. 24.

Vermont officials are urging people who had Thanksgiving gatherings with those outside their household to now quarantine.

“My request to Vermonters who may have participated in travel and/or multi-household gatherings is simply this: Please quarantine yourselves at home, and please get tested now and in seven days,” state Health Commissioner Dr. Mark Levine said during a press briefing Friday.

Gov. Phil Scott echoed the health commissioner’s request.

“If you have had one of those gatherings yesterday, then you shouldn't send your kids to school next week," he said. "You should quarantine your kids for at least seven days, get a test, and then we'll move forward."

Scott said earlier in the week that school officials will ask returning students if they attended a Thanksgiving gathering with people outside their household to determine quarantine requirements.

"We did all of this to try and protect Vermont, to try and prevent the rise in the number of cases," Scott said Friday.

ABC News' Joshua Hoyos contributed to this report