As of Thursday, the city of Los Angeles had vaccinated 152,612 people against COVID-19 at five city-run vaccination sites. The problem, Los Angeles Mayor Eric Garcetti said, is supply. The city needs more vaccines.

Though California has said eligibility may go by age, Garcetti asked for flexibility Thursday so the city can get vaccines into communities where people are disproportionately dying -- specifically communities of color.

"The next group designated to be moved into receiving the vaccines in the coming weeks will be our workers in emergency services, as well as food and education and child care," Garcetti said.

The city has increased vaccine rollout by 17% since last week, Garcetti said, and its Dodger Stadium site is vaccinating 12,000 people per day. The entire county received 137,000 doses this week and expects 188,000 next week, according to Los Angeles County Public Health Director Dr. Barbara Ferrer.

"The city has distributed 81% of the doses that we have received," the mayor said. "This number is among the highest in the country, higher than many of our peer cities."

COVID-19 stats continue to improve in the hardest-hit county in America. Hospitalizations were down 3% and cases were down 3.4% from Wednesday, Garcetti said. However, Los Angeles County still reported 273 deaths from the disease on Thursday, crossing 16,000 total.

ABC News' Cammeron Parrish contributed to this report.

Tampa Mayor Jane Castor signed an executive order Thursday requiring the use of face coverings at outdoor Super Bowl-related activities to help mitigate the spread of COVID-19 in the Florida city.

The order targets sites where large crowds of people are likely to congregate around the Super Bowl this weekend, with limited ability to remain socially distant from each other. They include "Event Zones" in areas of downtown Tampa and surrounding Raymond James Stadium, as well as "Entertainment Districts," including Ybor City Historic District, the South Howard Commercial Overlay District, the Central Business District and the Channel District.

Those exempt from the order include children under the age of 5, someone communicating with a hearing-impaired individual and people with existing health conditions who would be impaired by a mask.

The Super Bowl will be held on Feb. 7 between the Kansas City Chiefs and hometown Tampa Bay Buccaneers. The mask mandate is in effect now through Feb. 13. Those who violate it could be subject to a $500 fine.

The NFL had previously announced that masks will be required in the stadium unless eating or drinking.

Under a previous order still in effect, masks are required in Tampa at indoor locations outside the home when social distancing cannot be maintained.

ABC News' Will McDuffie contributed to this report

California had its second-deadliest day of the coronavirus pandemic on Wednesday, with 737 additional fatalities from COVID-19.

The deadliest day was Jan. 21 when 764 deaths from the disease were recorded, according to data from the California Department of Public Health.

This comes as the daily number of new COVID-19 cases has dropped considerably in the Golden State.

California's seven-day positivity rate for COVID-19 tests currently stands at 7.9%.

ABC News’ Bonnie Mclean contributed to this report.

The U.S. Department of Health and Human Services has amended rules on who can administer COVID-19 vaccines to address potential shortages.

Any retired nurse or doctor whose license expired in the past five years can now be brought back to give the shot, and anyone licensed or certified to give a COVID-19 vaccine in their state can do so in other states.

ABC News’ Anne Flaherty contributed to this report.

British Prime Minister Boris Johnson has indicated that England's lockdown restrictions will remain in place until at least early March.

In a statement to lawmakers at the U.K. House of Commons on Wednesday, Johnson said officials "do not yet have enough data to know exactly how soon it will be safe to reopen our society and economy." But he expressed hope that schools could reopen from March 8, so long as his government meets its target of vaccinating everyone in the top four priority groups by mid-February.

The prime minister also announced new restrictions for travelers arriving in England from countries deemed to be high-risk. He said the United Kingdom remains in a "perilous situation" with more than 37,000 people hospitalized with COVID-19 -- almost double the amount during the previous peak in April.

During a press conference later Wednesday, Johnson told reporters that March 8 was the "earliest" date by which the government could "responsibly" allow schoolchildren to return to classrooms.

The comments come after the U.K. became the fifth country in the world to record more than 100,000 deaths from COVID-19.

England entered its third national lockdown of the coronavirus pandemic on Jan. 5.

Although Johnson is the prime minister of the U.K., his administration is only responsible for COVID-19 restrictions in England because public health legislation is devolved to national governments within the U.K., meaning that Scotland, Wales and Northern Ireland are responsible for their own coronavirus-related policies.