Coronavirus updates: Fauci calls 'herd immunity' declaration embraced by White House 'ridiculous'
"This idea that we have the power to protect the vulnerable is total nonsense."
A pandemic of the novel coronavirus has now killed more than 1 million people worldwide.
Over 38.8 million people across the globe have been diagnosed with COVID-19, the disease caused by the new respiratory virus, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. The criteria for diagnosis -- through clinical means or a lab test -- has varied from country-to-country. Still, the actual numbers are believed to be much higher due to testing shortages, many unreported cases and suspicions that some national governments are hiding or downplaying the scope of their outbreaks.
Since the first cases were detected in China in December, the virus has rapidly spread to every continent except Antarctica.
The United States is the worst-affected country, with more than 7.9 million diagnosed cases and at least 217,721 deaths.
California has the most cases of any U.S. state, with more than 866,000 people diagnosed, according to Johns Hopkins data. California is followed by Texas and Florida, with over 836,000 cases and over 744,000 cases, respectively.
More than 190 vaccine candidates for COVID-19 are being tracked by the World Health Organization, at least 10 of which are in crucial phase three studies. Of those 10 potential vaccines in late-stage trials, there are currently five that will be available in the United States if approved.
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North Carolina reports highest single-day case increase
North Carolina reported 2,532 new cases on Thursday, representing the state's highest single-day increase since the start of the pandemic. Health officials reported 1,926 new cases the previous day.
"Today, NC reported 2,532 new cases of #COVID19, our highest day of cases. Our trends are headed in the wrong direction, but we can turn this around, just as we have throughout the pandemic," the state's health department tweeted Thursday.
The jump in new cases was accompanied by an increase in completed tests. The percentage of positive tests dropped slightly to 6.5%, but was still well above the September average of about 5%.
At least 311 patients had been admitted to local hospitals with symptoms of COVID-19 over the last day.
El Paso announces restrictions as area cases rise
Officials in El Paso, Texas, announced new activity restrictions to slow the spread of the virus as new cases and hospitalizations rose to an all-time high.
The city reported 717 new cases and 20 delayed testing results on Thursday, bringing the total number of active cases to 6,887. Health officials also announced an additional death, bringing the total number of fatalities to 554. The patient was described as a male in his 80s with health conditions.
"Today’s spike is part of an overall increase in cases seen over the last week due to community spread believed to be caused by COVID-19 fatigue resulting in residents letting their guard down," city officials tweeted Thursday. "For this reason, the Mayor and City Attorney’s Office are working with the Department of Public Health (DPH) and Office of Emergency Management to further restrict activities in our community to slow the spread. These strong restrictions are necessary and must be enacted."
Hong Kong, Singapore announce forthcoming 'travel bubble'
Officials in Hong Kong and Singapore announced an agreement to establish a bilateral Air Travel Bubble in an effort to revive cross-border air travel between the two aviation hubs.
Citing low incidents of COVID-19 infections and 'robust' anti-transmission mechanisms, Singapore's Transport Minister Ong Ye said it is a "safe, careful but significant step forward to revive air travel, and provide a model for future collaboration with other parts of the world."
Hong Kong and Singapore are both major financial hubs, and the international air route between the two cities was among the busiest in the Asia-Pacific region before the pandemic took shape, officials said in a statement.
They did not offer details about a potential launch date.
-ABC News' Christine Theodorou contributed to this report.
Harris shuts down travel after 2 test positive
The Biden campaign has announced that two people traveling with Sen. Harris in Arizona, Communications Director Liz Allen, and a non-staff flight crew member, have tested positive for COVID-19
“Senator Harris was not in close contact, as defined by the CDC, with either of these individuals during the two days prior to their positive tests; as such, there is no requirement for quarantine," Jennifer O'Malley Dillon, Biden's campaign manager, said in a statement.
“Neither of these people have had contact with Vice President Biden, Senator Harris or any other staffers since testing positive or in the 48 hours prior to their positive test results," she added.
The campaign is canceling Harris' travel through Sunday "out of an abundance of caution and in line with our campaign's commitment to the highest levels of precaution."
Harris will return to in-person campaigning on Monday.
-ABC News' Molly Nagle contributed to this report.
Fauci sounds alarm over rising infections as winter nears
Dr. Anthony Fauci, the nation's top expert on the coronavirus pandemic, said the recent rise in COVID-19 infections across the United States is "concerning" as winter nears.
"We have a baseline of daily infections that are approximately 45-50,000 per day," Fauci, director of the National Institute of Allergy and Infectious Diseases and a key member of the White House coronavirus task force, told ABC News chief anchor George Stephanopoulos in an interview Thursday on "Good Morning America."
"The issue is as we enter -- as we are now -- into the cooler season of the fall and ultimately the colder season of the winter," he added, "you don't want to be in that compromised position where your baseline daily infection is high and you are increasing as opposed to going in the other direction."
Dozens of U.S. states are reporting upticks in COVID-19 test positivity rates, which Fauci said "has proven in the past to be a very good prediction of a surge in cases, which ultimately leads to a surge in hospitalizations."
"Then ultimately in some individuals, that obviously will be an increase in deaths," he added. "So we really got to double down on the fundamental public health measures that we talk about every single day, because they can make a difference."
Fauci, who said that his adult daughters won't be spending Thanksgiving with him and his wife this year due to concerns about spreading the virus, urged families to be careful during the upcoming holidays and evaluate both the risks and benefits of gathering indoors.
"It's up to the individuals and the choices they make," he said.
When asked about President Donald Trump's packed campaign rallies, where many supporters are seen without face masks, Fauci said it's "a high-risk endeavor."
"I don't like to be pitted against what the president says, but it's so clear that when you have congregate settings and so many people, when you're in a situation when the community infection rate is there, you can't runaway from or argue with the numbers," he said.