Russia confirmed 12,126 new cases of COVID-19 over the past 24 hours, the country’s highest single-day increase since the start of the pandemic.

The previous record was 11,656 new cases set on May 11.

An additional 201 coronavirus-related fatalities were also registered in the last day. The country's cumulative totals now stand at 1,272,238 confirmed cases and 22,257 deaths, according to Russia’s coronavirus response headquarters.

More than 30% of the newly confirmed cases -- 3,701 -- were registered in Moscow, the epicenter of the country's COVID-19 outbreak.

Russian authorities have said there's no immediate plan to impose a second nationwide lockdown, even as the country's outbreak grows after most coronavirus-related restrictions were lifted over the summer. The country has seen its daily caseload double over the past month, while its capital has had a 53% rise in new infections in the last week, according to a report by The Moscow Times, the only independent English-language news outlet reporting within Russia.

Officials in Moscow, however, have recommended that the elderly self-isolate at home and also encouraged businesses to have at least one-third of their employees work from home. School holidays in the capital this month were extended from one to two weeks.

ABC News' Alina Lobzina contributed to this report.

There were 56,191 new cases of COVID-19 identified in the United States on Thursday, according to a real-time count kept by Johns Hopkins University.

The latest daily tally is up by nearly 6,000 from the previous day but is still under the country’s record set on July 16, when there were 77,255 new cases in a 24-hour-reporting period.

An additional 961 coronavirus-related fatalities were also recorded Thursday, down from a peak of 2,666 new fatalities reported on April 17.

A total of 7,607,250 people in the United States have been diagnosed with COVID-19 since the pandemic began, and at least 212,784 of them have died, according to Johns Hopkins. The cases include people from all 50 U.S. states, Washington, D.C. and other U.S. territories as well as repatriated citizens.

By May 20, all U.S. states had begun lifting stay-at-home orders and other restrictions put in place to curb the spread of the novel coronavirus. The day-to-day increase in the country's cases then hovered around 20,000 for a couple of weeks before shooting back up and crossing 70,000 for the first time in mid-July. The daily tally of new cases has gradually come down since then but has started to climb again in recent weeks.

An ABC News analysis of COVID-19 trends across all 50 U.S. states as well as Washington, D.C. and Puerto Rico found there were increases in newly confirmed cases over the past two weeks in 28 states.

The analysis also found increases in the daily positivity rate of COVID-19 tests in 25 states, increases in COVID-19 hospitalizations in 35 states and increases in daily COVID-19 death tolls in 18 states plus Puerto Rico.

The seven-day average of new cases in the United States has now surpassed 44,000, the highest it has been since Aug. 21.

Two states -- Montana and South Dakota -- reported their highest single-day increases in the number of new COVID-19 cases. Seven states -- Arkansas, Iowa, Montana, Oklahoma, South Dakota, Wisconsin and Wyoming -- hit a record number of current COVID-19 hospitalizations in a day.

Although figures in the Northeast still remain relatively low, the number of new cases continues to slowly increase, relative to the figures that were seen during the spring. The region's seven-day average of new cases is now the highest it has been since June 2. In the last month alone, that average has increased by more than 69%.

In the Midwest, the number of new cases continues to hit record levels, averaging 13,200 cases per day, largely driven by consistently high caseloads in Montana, North Dakota, South Dakota and Wisconsin. The number of current COVID-19 hospitalizations in many midwestern states also continues to climb. Since Sunday, current hospitalizations in Montana, Nebraska, North Dakota, Oklahoma, South Dakota and Wisconsin have all hit record highs.

The number of new cases in the South remain significantly lower than they were throughout the summer. However, the South still contributes to more than 45% of the country's daily regional caseload, with an average of over 18,000 new cases per day.

Over the past three weeks, the number of new cases in the West has increased by 26%. Idaho and Utah still continue to produce high daily case totals. Although the figures in California are on a downward trend, the state continues to report a high number of new cases every day.

The trends were all analyzed from data collected and published by the COVID Tracking Project over the past two weeks, using the linear regression trend line of the seven-day moving average.

ABC News' Benjamin Bell, Brian Hartman, Soorin Kim and Arielle Mitropolous contributed to this report.

Dr. Deborah Birx, the White House coronavirus response coordinator, said states in the Northeast are showing "troubling signs" that they could reemerge as COVID-19 hotspots.

"It’s early here," Birx said at a press conference Thursday, after participating in a roundtable discussion at the University of Connecticut's campus in Hartford. "We can continue in the Northeast to contain the virus."

As the weather turns colder, Birx said the novel coronavirus is transmitting more rapidly within families and social groups than in schools or workplaces where people are taking precautions. She said it's a lesson that was learned in the South during the summer when people went indoors for air-conditioning to escape the heat and humidity.

"What we’re seeing in the community is much more spread occurring in households and in social occasions, small gatherings where people have come inside, taken off their mask to eat or drink or socialize with one another," she said.

Northeastern states, once a hotbed for the virus, are beginning to see upticks in COVID-19, case numbers, positivity rates and hospitalizations.

"This is really a message to everyone in Connecticut: the kind of spread that we’re seeing now is very different from the spread we experienced in March and April,” Birx warned. "What we did in the spring is not going to work in the fall."

The U.S. Centers for Disease Control and Prevention said Friday it's not planning to deploy a large team of staff members to the White House to conduct contact tracing.

CDC spokesman Benjamin Haynes confirmed to ABC News that there are now two contact tracers assigned to the White House. The first CDC staff member assigned to the operation has been at the White House since March, while the second person joined the effort recently.

"There are no plans to send anyone else at this point," Haynes told ABC News on Friday.

ABC News reported on Tuesday that the agency had assembled a large team of experts to trace the explosion of COVID-19 cases at the White House but the unit has largely been put on standby as President Donald Trump opted to run his own operation through the White House medical unit.

COVID-19 cases among White House staff and their close contacts continue to climb after Trump revealed last week that he and his wife tested positive for the disease.

CDC guidelines recommend tracing cases as soon as possible because a single infected person can begin to spread COVID-19 two days before the individual has any symptoms or tests positive.

ABC News' Anne Flaherty contributed to this report.