COVID-19 updates: LA has highest daily death total since April

West Virginia Gov. Jim Justice announced Tuesday evening that he tested positive for COVID-19 and is experiencing moderate symptoms.

Justice, 70, who is fully vaccinated against COVID-19 and has received a booster shot, said he has started a course of monoclonal antibody treatment, as recommended by his physicians. Everyone who has been in close contact with the governor over the past few days is being notified. His wife, Cathy Justice, tested negative for the virus on Tuesday evening, according to a press release from the governor's office.

The governor was scheduled to deliver his State of the State address that night but was forced to do so via a written statement to the West Virginia Legislature instead.

"I feel extremely unwell at this point, and I have no choice but to postpone my State of the State address to the Legislature," Justice said in a statement Tuesday evening. "I woke up this morning with congestion and a cough. A little while later, I developed a headache and fever, so I decided to get tested right away."

"The rapid test that I took came back negative, but by the late afternoon, my symptoms were still getting much worse," he continued. "My blood pressure and heart rate were extremely elevated, and I had a high fever. Finally, my PCR test results this evening confirmed I was positive. Because of all this, I began receiving my antibody treatment and I hope this will lessen these symptoms."

The acting head of the Food and Drug Administration warned Tuesday that most people in the United States will contract COVID-19, as the country grapples with record levels of infections and hospitalizations.

"I think it's hard to process what's actually happening right now, which is most people are going to get COVID," Dr. Janet Woodcock, the acting commissioner of the FDA, said while testifying before the Senate Committee on Health, Education, Labor and Pensions on Capitol Hill in Washington, D.C. "What we need to do is make sure the hospitals can still function, [and] transportation, you know, other essential services are not disrupted while this happens."

New COVID-19 cases increased 55% worldwide in the week ending Jan. 9, the World Health Organization said on Tuesday. 

More than 15 million new cases were reported, up from the about 9.5 million in the previous week, the United Nation's health agency said in its weekly epidemiological update. Omicron is "rapidly replacing" other variants of the virus, according to the update.

"In terms of disease severity, there is growing evidence that the Omicron variant is less severe as compared to other variants," the WHO said.

Last week's increase marked a slowdown from the 71% spike reported the previous week, following a "gradual" rise since October, according to the update. 

Reported cases in the Americas increased 78%, down from a 100% increase the week prior. The greatest increase in new cases came in Southeast Asia, where newly reported cases increased 418%, the WHO said.

On average, the U.S. is now reporting more than 750,000 new COVID-19 cases per day, a more than sixfold increase compared to one month ago, according to federal data. 

On Monday, the U.S. recorded a single-day high of more than 1.4 million new cases, following soaring demand for tests and a backlog of weekend reporting data. 

The surging national case numbers may not be indicative of what is happening in every region of the country and the overall increase in the U.S. does not necessarily mean that some regions will not see a plateau or decline in numbers. 

Although the incredibly high case totals are most certainly due, in large part, to the country's latest omicron surge, the data is incredibly volatile on a day-to-day level. Many states no longer report data over the weekends, which can create an illusion of very low totals on weekends and very high daily numbers on Mondays and Tuesdays. 

Also, there was a major surge in demand over the holidays, which could artificially increase numbers. However, experts say overall totals are likely undercounted given the increased use of at-home COVID-19 testing.

-ABC News' Arielle Mitropoulos