North Carolina has identified its first case of the coronavirus’ United Kingdom variant, state health officials said.

The variant was confirmed in an adult in Mecklenburg County.

The U.S. has 195 confirmed cases of the variant across 21 states, according to North Carolina’s Department of Health and Human Services.

ABC News’ Josh Hoyos contributed to this report.

COVID-19 cases and hospitalizations are going down across the country.

In 44 states, the seven-day average of new cases has dropped over 10% since last week, The COVID Tracking Project reported Thursday. Daily cases are rising in only one state -- Virginia.

In 24 states, the number of current hospitalizations decreased by more than 10% from a week ago, it found. Everywhere else in the nation, hospitalizations are relatively flat.

United Airlines' top executive said he would like the airline to require COVID-19 vaccination for employees.

"I think the right thing to do is for United Airlines, and for other companies, to require the vaccines," CEO Scott Kirby said during an employee town hall Thursday. "That said, we have to have the logistic challenges worked out … and we need some others to show leadership, particularly in the health care industry."

Kirby told employees that if other companies mandate vaccines, "You should probably expect United to be amongst the first wave of companies that do it as well."

For now, United is urging employees to get the vaccine as soon as possible, according to an internal memo obtained by ABC News.

On an earnings call yesterday, an executive said the company has been working with local governments "to move our employees up in prioritization of essential workers for vaccination, both for their safety and the safety of our customers."

-ABC News' Gio Benitez

Two people -- a man and a child -- were identified as the first cases of the United Kingdom variant in New Jersey, officials said.

The Ocean County man, who is in his 60s, had no travel history or clear exposures to others who were ill, said the state’s Health Commissioner, Judy Persichilli.

He developed symptoms on Dec. 29 and was tested one week later. His “symptoms have since resolved and he was never hospitalized,” Persichilli said.

The child, who had traveled to northern New Jersey, was tested on Jan. 11 in New York City and is asymptomatic, she said.

ABC News’ Aaron Katersky contributed to this report.

Despite rising COVID-19 infections in Japan, International Olympic Committee president Thomas Bach said Thursday that there is "no reason whatsoever" to believe the Olympic Games in Tokyo will not open on July 23 as planned.

"This is why there is no plan B and this is why we are fully committed to make these games safe and successful," Back told Japanese news agency Kyodo in an interview Thursday.

However, Bach admitted he could not guarantee that the stands would be full or rule out the possibility that the Games would be held without spectators, according to Kyodo.

The 2020 Summer Olympics were supposed to kick off in Tokyo last year on July 24. But in late March, amid mounting calls to delay or cancel the upcoming Games, the International Olympic Committee and Japan's prime minister announced that the event would be held a year later due to the coronavirus pandemic.

Now, Japan is facing a resurgence of COVID-19. The country of 126 million people reported the highest number of new cases in the Western Pacific region last week. The infection rate -- currently at 32.8 cases per 100,000 people -- increased by 4% over the previous week, according to the World Health Organization's latest COVID-19 weekly epidemiological update.

The Japanese Ministry of Health, Labor and Welfare confirmed 5,662 new cases of COVID-19 as well as an additional 87 fatalities from the disease on Thursday, bringing the cumulative totals to 348,646 cases and 4,829 deaths.

Japanase Prime Minister Yoshihide Suga has declared a state of emergency in Tokyo and 10 other prefectures due to climbing case counts and growing death tolls.