COVID updates: Secretary of Defense Lloyd Austin tests positive
He said he has mild symptoms and will be quarantining for five days.
As the COVID-19 pandemic has swept the globe, more than 5.4 million people have died from the disease worldwide, including over 825,000 Americans, according to real-time data compiled by Johns Hopkins University's Center for Systems Science and Engineering.
About 62% 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:
UCLA pulls out of bowl game
UCLA said its football team has pulled out of Tuesday night's San Diego County Credit Union Holiday Bowl due to COVID-19.
UCLA was set to play North Carolina State.
-ABC News' Matt Fuhrman
Greece sees record single-day increase
Greece reported 21,657 new COVID-19 cases on Tuesday -- a record 133% increase from the 9,284 new cases reported on Monday, according to government data.
Eighty-five percent of COVID-19 patients in Greece's hospitals are not vaccinated.
-ABC News' Christine Theodorou
US cases, hospitalizations, deaths expected to rise
Forecast models used by the CDC suggest cases, hospitalizations and deaths will rise over the next four weeks.
According to the models, the U.S. death toll could reach 862,900 by Jan. 22.
Nationally, estimates suggest between 8,700 and 20,800 Americans could be admitted to the hospital each day by Jan. 10.
These forecasts are from the COVID-19 Forecast Hub at UMass Amherst, where a team monitors and combines forecasting models from the nation’s top researchers. The team then creates an ensemble -- displayed like a hurricane forecast spaghetti plot -- usually with a wide cone of uncertainty.
-ABC News' Arielle Mitropoulos, Brian Hartman
Hugh Jackman tests positive, The Music Man cancels performances
Hugh Jackman, who has been starring in The Music Man on Broadway, tweeted that he tested positive for COVID-19 Tuesday morning.
"My symptoms are like a cold -- I have a scratchy throat and a bit of a runny nose," Jackman said in an Instagram video. "But I'm fine and I'm just going to do everything I can to get better ASAP. And as soon as I'm cleared, I'll be back on stage."
The Music Man tweeted that all performances are canceled through Jan. 1 and that Jackman will be back in the show on Jan. 6.
Former Trump surgeon general slams CDC over new isolation guidance
Dr. Jerome Adams, the U.S. surgeon general under former President Donald Trump, slammed the U.S. Centers for Disease Control and Prevention over its change on isolation times for infected individuals.
In a Twitter thread, Adams criticized the agency's decision to omit the recommendation for COVID-19-positive individuals to take a COVID-19 test, prior to ending isolation.
The CDC reduced the isolation period from 10 days to five for asymptotic patients.
"Regardless of what CDC says, you really should try to obtain an antigen test (I know- easier said than done) and confirm it’s negative prior to leaving isolation and quarantine. There’s not a scientist or doctor I’ve met yet who wouldn’t do this for themselves/ their family," Adams tweeted.
The former surgeon general added, "This isn’t about the best science – it’s a compromise to keep the economy open in the face of inadequate tests."
-ABC News' Arielle Mitropoulos