The number of COVID-19 vaccinations around the world now surpasses infections, Dr. Tedros Adhanom Ghebreyesus, director general of the World Health Organization, said during a Friday news briefing. "In one sense, that is good news and a remarkable achievement in such a short time frame."

On the other hand, he noted, those vaccinations have not been distributed equally.

"More than three quarters of those vaccinations are in just 10 countries that account for almost 60% of global GDP," Tedros said. "Almost 130 countries with 2.5 billion people [have] yet to administer a single dose. Some countries have already vaccinated large proportions of their population who are at lower risk of severe disease or death.”

Tedros urged drug companies to share their technology and data to ensure more equitable access.

"The longer it takes to vaccinate those most at risk everywhere, the more opportunity we give the virus to mutate and evade vaccines," Tedros said. "Unless we suppress the virus everywhere we could end up back at square one."

ABC News' Kirit Radia contributed to this report.

People with certain chronic conditions will be eligible for COVID-19 vaccinations on Feb. 15, Gov. Andrew Cuomo announced during a Friday press conference. Underlying conditions are a key risk factor for severe COVID-19 illness and death. Cuomo posted the full list of conditions on Twitter Friday afternoon, which included people with cancer, heart conditions, chronic kidney disease, severe obesity and those who are pregnant.

States that instituted mask mandates reported a decline in COVID-19 hospitalizations, according to a new report from the Centers for Disease Control and Prevention.

Researchers analyzed hospitalization data in 10 states with mask mandates between March and October of last year. They found a 5.5% decline in weekly COVID-19 hospitalizations among adults, compared to the period before the mandates were implemented.

In addition to reducing virus exposure and transmission, masks are part of a multi-pronged strategy to "reduce strain on the health care system," the researchers note, adding that masks likely have a direct effect on COVID-19 illness and death.

The researchers did not examine whether other policies, such as school closings and physical distancing recommendations, contributed to the decline. The results were published Friday in the CDC's Morbidity and Mortality Weekly Report.

-ABC News' Eric Strauss contributed to this report.

Former Yankees pitcher Mariano Rivera will join Mayor Bill de Blasio at Yankee stadium Friday afternoon to celebrate the opening of a mass vaccination site at the stadium.

The site, which will be reserved for residents from the Bronx, will be open daily from 8 a.m. to 8 p.m. and is meant to ensure that Black and Latino residents have equal access to the vaccine. It will be open 24 hours a day when more vaccine supply is available, according to the mayor.

"I think it’s going to be extraordinary," de Blasio told WNYC on Friday. "We are going to have a wonderful celebration of this place opening up. I will be joined by Mariano Rivera, who will help us get this message out. This is for people of the Bronx, people who haven’t been able to get vaccinated."

Bronx residents who want to book an appointment should go to  or call 1-833-SomosNY.

-ABC News' Aaron Katersky contributed to this report.

There were 111,896 new cases of COVID-19 confirmed in the United States on Sunday, according to a real-time count kept by Johns Hopkins University.

Sunday's case count is the lowest the country has recorded since Dec. 25 and is also far less than the all-time high of 300,282 newly confirmed infections on Jan. 2, Johns Hopkins data shows.

An additional 1,794 fatalities from COVID-19 were registered nationwide on Sunday, down from a peak of 4,466 new deaths on Jan. 12, according to Johns Hopkins data.

COVID-19 data may be skewed due to possible lags in reporting over the Martin Luther King Jr. Day holiday weekend.

A total of 26,187,424 people in the U.S. have been diagnosed with COVID-19 since the pandemic began, and at least 441,331 have died, according to Johns Hopkins data. The cases include people from all 50 U.S. states, Washington, D.C., and other U.S. territories as well as repatriated citizens.

Much of the country was under lockdown by the end of March as the first wave of pandemic hit. By May 20, all U.S. states had begun lifting stay-at-home orders and other restrictions put in place to curb the spread of the novel coronavirus. The day-to-day increase in the country's cases then hovered around 20,000 for a couple of weeks before shooting back up over the summer.

The numbers lingered around 40,000 to 50,000 from mid-August through early October before surging again to record levels, crossing 100,000 for the first time on Nov. 4, then reaching 200,000 on Nov. 27 before topping 300,000 on Jan. 2.

So far, the U.S. Food and Drug Administration has authorized two COVID-19 vaccines for emergency use -- one developed by U.S. pharmaceutical giant Pfizer and its German partner BioNTech, and another developed by American biotechnology company Moderna and the National Institute of Allergy and Infectious Diseases. More than 32 million vaccine doses have been administered nationwide, according to the latest data from the Centers for Disease Control and Prevention.