Coronavirus updates: Herd immunity by fall 'ambitious,' says surgeon general nominee

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.

California reported its highest daily death toll since the start of the pandemic with another 764 lives lost.

The state reported 23,024 new cases on Friday.

A CDC report released Friday indicates that the risk of severe allergic reactions with Moderna's vaccine is low. Severe, life threatening allergic reactions were seen in 2.5 cases per million people receiving the first dose of the Moderna COVID-19 vaccine, the report said. 

Of the 4,041,396 first doses given as of Jan. 10, there were 1,266 (0.03%) reports of "adverse events," the report said. Among those, 108 "adverse events" were considered as possible cases of severe allergic reaction, including anaphylaxis. Ten cases were determined to be anaphylaxis (a rate of 2.5 anaphylaxis cases per 1 million doses) including nine people with a documented history of allergies or allergic reactions, the report said.

ABC News’ Sony Salzman contributed to this report.