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.

Dr. Anthony Fauci, the nation's leading infectious disease expert, spoke about the latest updates on the U.S. vaccine rollout during an interview Monday on ABC News Live.

Fauci, director of the National Institute of Allergy and Infectious Diseases, said that he believes the vaccine will be available to everyone beginning in April, but it won't be until the fall that everyone has actually gotten their shot in the arm.

"It will take several months-May, June, July, August- before you really get what I would consider the herd immunity level, which is an estimate, but I think it's a reasonable estimate, namely getting 70 to 85% of the population vaccinated," Fauci, who is also Biden's chief medical adviser, told ABC News Live.

Fauci said that the timeline is not considering a future approval of coronavirus vaccines developed by Johnson & Johnson and AstraZeneca.

"I think if the J&J or the [AstraZeneca] product comes through with an efficacy that's good enough to be able to be in the mix, that will be very helpful to get things done even sooner than we thought," he said.

Fauci also opened up about an incident where he was exposed to a powder substance that was in his mail last year. The powder was later deemed benign, but only after his security detail put on hazmat suits and sprayed him down.

"It frightened the heck out of my children when they found out about it and my wife too," he said. "I mean, I've decided I'm doing something that might be dangerous but that's it, I chose it. My children did not choose that."

Watch Fauci's full interview with ABC News Live at 7 p.m. and 9 p.m. ET Monday.