Coronavirus updates: Fauci calls 'herd immunity' declaration 'ridiculous'

The Centers for Disease Control released their weekly ensemble forecast showing that the agency expects the U.S. death toll to reach between 229,000 and 240,000 people by Nov. 7, according to new forecasts. 

The center said it received forecasts of COVID-19 deaths over the next 4 weeks from 44 modeling groups. Of the 44 groups, 39 provided forecasts for both new and total deaths, three groups forecast total deaths only, and two focused solely on new deaths.

"This week’s national ensemble forecast indicates an uncertain trend in new COVID-19 deaths reported over the next four weeks and predicts that 3,400 to 7,100 new deaths will likely be reported during the week ending November 7, 2020," the CDC said in a statement Thursday. 

It added: "The state- and territory-level ensemble forecasts predict that over the next 4 weeks, the number of newly reported deaths per week may increase in three jurisdictions and decrease in one jurisdiction … trends in numbers of future reported deaths are uncertain or predicted to remain stable in the other states and territories."

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. 

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."

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.