Texas has become the second U.S. state to have a total of more than 2 million diagnosed cases of COVID-19.

The Lone Star state surpassed the grim milestone late Tuesday, with a cumulative tally of 2,014,645 confirmed cases. California currently has 2,795,978, according to a real-time count kept by Johns Hopkins University.

More people in the United States died of COVID-19 in the past week than they did from the flu during all of last season, data show.

There were an estimated 22,000 flu deaths nationwide during the 2019-2020 flu season, according to the U.S. Centers for Disease Control and Prevention. The flu season was regarded as moderate and stretched out over several months.

By contrast, there were 23,119 new COVID-19 deaths reported between Jan. 6-12, according to The COVID Tracking Project.

-ABC News' Anne Flaherty

There were 4,056 deaths due to COVID-19 reported on Tuesday in the U.S., according to The COVID Tracking Project.

That marks the second time new deaths surpassed 4,000, based on the tracker's tally, following the record 4,081 reported less than a week ago on Jan. 7.

The seven-day average number of deaths reported Tuesday also set a new record, the tracker said.

There were 213,885 new cases and 131,326 people are currently hospitalized due to the virus in the U.S.

Deaths from COVID-19 in the United Kingdom have jumped, as the country battles a new, more contagious variant of the novel coronavirus.

The U.K. reported 6,298 new COVID-19 deaths in the week ending Jan. 10, up from 4,165 the previous week, according to the World Health Organization's latest epidemiological report. There were 9.3 new deaths per 100,000 residents -- a 51% increase over the previous week, according to the WHO.

Elsewhere, the African region reported the highest percentage increases over any other region in cases and deaths during that time frame. There were over 174,000 new cases and over 4,300 new deaths, according to the report.

COVID-19 cases are on the decline in India, the second-most populous nation in the world. There were just over 126,000 new cases reported -- a 7% decrease in infections per 100,000 residents over the previous week, according to the report.

ABC News' Christine Theodorou contributed to this report.

Pope Francis and his predecessor, Pope Emeritus Benedict XVI, have received their first dose of a COVID-19 vaccine, according to Vatican spokesman Matteo Bruni.

"I can confirm that as part of the Vatican City State vaccination program to date, the first dose of the COVID-19 vaccine has been administered to Pope Francis and the Pope Emeritus," Bruni said in a statement Thursday.

Francis, who turned 84 last month and had part of a lung removed when he was younger, reportedly received the shot Wednesday while Benedict, 93, reportedly got it Thursday.

Vatican City, an independent enclave surrounded by Rome that serves as the headquarters of the Roman Catholic Church, launched the immunization campaign on Wednesday, administering doses of a COVID-19 vaccine developed by U.S. pharmaceutical giant Pfizer and its German partner BioNTech.

The tiny city-state has a population of only around 800 people but employs more than 4,000. It's unclear how many doses of the Pfizer/BioNTech vaccine have been procured so far.

Vatican City citizens, along with employees and pensioners, will have the opportunity to receive the vaccine as well as family members who are entitled to use of the city-state's health care system. Priority is being given to health care workers, public safety personnel, the elderly and individuals who are most frequently in contact with the public, according to Bruni.

The vaccination campaign is voluntary and people under the age of 18 are being excluded for the time being, Bruni said.

Since the start of the pandemic, Vatican City has reported at least 27 confirmed cases of COVID-19, according to a real-time count kept by Johns Hopkins University.

ABC News' Phoebe Natanson contributed to this report.