The National Football League is closing all team facilities to in-person activities on Monday and Tuesday.

The ban doesn't apply to teams scheduled to play on those days, including a Steelers-Ravens game on Tuesday that's already been rescheduled twice.

The NFL cited in a league-wide memo rising COVID-19 cases in the U.S. and the "understanding that a number of players and staff celebrated the Thanksgiving holiday with out-of-town guests" as reasons for the closures.

ABC News' Kelsey Walsh contributed to this report.

Public and private gatherings with those outside your household will be prohibited in Los Angeles County starting Monday under a new public health order.

Playgrounds and cardrooms will also close, among other restrictions.

Religious gatherings and protests are exempt from the temporary order, which will remain in effect through Dec. 20.

The measures come as the county continues to see "alarming levels" of new COVID-19 cases and increasing hospitalizations, the Los Angeles County Department of Public Health said.

As of Wednesday, outdoor dining in the county is on pause for the next three weeks.

Officials had warned additional lockdown measures would come once the five-day average of cases reached 4,500. On Friday, that number was 4,751.

ABC News' Matthew Fuhrman and Bonnie Mclean contributed to this report

More than 13 million people have tested positive for COVID-19 in the U.S., according to Johns Hopkins University.

The U.S. crossed 12 million cases six days ago.

Experts have cautioned against reading too much into data reported before next week, as some state updates may be spotty due to the Thanksgiving holiday.

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

Nevada Gov. Steve Sisolak has ordered a three-week "statewide pause" that begins Tuesday to curb the spread of the novel coronavirus.

"I am not issuing a shutdown order," Sisolak said during a virtual press conference Sunday evening. "My goal is to aggressively try to attack this spread, while maintaining some portion of our economy and our daily lives."

Under the pause, residents will be required to wear face masks in private and public gatherings. Public gatherings will be limited to 50 people or to 25% capacity, whichever number is lower. Private gatherings will be limited to 10 people from no more than two households.

Sisolak said no additional businesses will be closed, but bars and restaurants will only be able to operate at 25% capacity with no more than four people per table. Gyms and fitness studios may operate with no more than 25% capacity while adhering to strict social distancing guidelines. Retail establishments including mall can continue operating at 50%.

"I know the majority of our bars and restaurants are doing their best, but these settings have proved to be high risk because they allow the opportunity for people to remove their face coverings in indoor settings around people outside of their households," Sisolak said. "That’s how the virus spreads."

ABC News' Marilyn Heck contributed to this report.