COVID-19 updates: Elizabeth Warren tests positive
The senator says she's experiencing "mild symptoms."
As the COVID-19 pandemic has swept the globe, more than 5.3 million people have died from the disease worldwide, including over 806,000 Americans, according to real-time data compiled by Johns Hopkins University's Center for Systems Science and Engineering.
About 61.4% of the population in the United States is fully vaccinated against COVID-19, according to data from the Centers for Disease Control and Prevention.
Latest headlines:
UK reports highest daily cases ever
The United Kingdom reported 93,045 new cases in the last 24 hours, breaking a daily record for the third day in a row.
The total number of cases over the last week now stands at 477,229, a 38.6% increase from the previous week.
-ABC News' Guy Davies
Rockettes canceled due to breakthrough cases
Friday's four Radio City Rockettes shows have been canceled due to breakthrough COVID-19 cases in the New York City production.
Plans for future shows haven't been determined.
-ABC News' Aaron Katersky
CDC studies find schools can test kids rather than quarantine
The Centers for Disease Control and Prevention on Friday endorsed a practice in schools called “test-to-stay,” which allows unvaccinated kids and staff to test instead of quarantine after being exposed to COVID-19.
The CDC says the practice can be employed in addition to other mitigation measures, such as vaccination and at least 3-feet of physical distance among students wearing masks.
The new guidance follows two studies out of Los Angeles County, California, and Lake County, Illinois. Both studies found no significant transmission in school when test-to-stay was used.
The studies were conducted before the omicron variant was detected in the U.S.
-ABC News' Anne Flaherty
Hospitals stretched thin in Wisconsin, Michigan
In Wisconsin, only 4% of ICU beds are available.
"This is getting really scary," Dr. Jamie Hess, an emergency physician at the University of Wisconsin, told ABC News.
"We're really reaching a crisis point where we have more patients to take care of then we have beds in the hospital or staff to care for them," Hess said.
Michigan has been struggling through a similar surge for nearly three months, with the state reporting more than 6,500 new cases each day. On average, more than 500 patients are being admitted to hospitals each day.
"Where we are right now feels a lot like the first surge back in March of 2020," Erin Dicks, a nurse manager at MICU Henry Ford Hospital, told ABC News. "We don't have enough beds to be able to manage this."
Dicks said so many patients are young.
"I think one of the biggest frustrating pieces for my staff is that they look at this as, this is preventable -- people don't have to die here," Dicks said.
-ABC News' Arielle Mitropoulos
UK reports 48.59% single-day increase in confirmed omicron cases
The U.K. reported a 48.59 percent single-day increase in confirmed omicron cases Sunday.
And across the U.K. in the last seven days, there's been a 51.9 percent increase in new COVID cases. Hospitalizations are up 8.1 percent during that period. However, there's been a 6.5 percent decrease in new deaths compared to the preceding seven days.
On Sunday, the British government reported 82,886 new COVID cases and 45 new deaths. The government also confirmed 12,133 new cases of the omicron variant.
London's mayor declared a major incident in the capital Sunday because of the serious threat of omicron. In an interview with the BBC on Sunday, he said that in the last 24 hours, "we're at almost 30,000 confirmed new cases, and in the last seven days almost 130,000 confirmed new cases."
He said he's worried about the impact the increases are already having on frontline emergency services in London, adding there are a record number of absences that will hamper their ability to respond to people who are unwell.
-ABC News' Christine Theodorou