Former U.N. Ambassador Nikki Haley has announced on Twitter that her sister-in-law Rhonda Lee Nelson has died from COVID-19.

Nelson, 53, who passed away on Nov. 25, resided in West Milton, Ohio, according to the Associated Press, and was a singer and piano musician who "ministered to many inside and outside of the church."

“Today we said goodbye to Michael’s sister, Rhonda, who passed the day before Thanksgiving of Covid. She ministered to many inside and outside of the church. She loved God, her family & all who knew her. She will be missed,” Haley said in her tweet.

No other details were provided regarding Nelson’s death but the seven-day rolling average of daily new cases in the state of Ohio has been on the rise in recent weeks, according to the Associated Press, and one in every 193 people in the state have tested positive for the novel coronavirus in just the past week alone.

Baltimore Ravens wide receiver Dez Bryant tweeted he would not be playing Tuesday after he tested positive for the coronavirus minutes before kickoff against the Dallas Cowboys.

Bryant said he was warming up with the team on the field -- with a mask on -- when he was pulled off by team officials for further testing.

Fox Sports reported an earlier COVID-19 test came back inconclusive and had to be retested.

Bryant reacted angrily on social media, as the former long-time Cowboys player had been looking forward to facing his former team. He tweeted he had the same routine and the positive test made no sense to him, before saying he was going to call it quits for the rest of the season.

Two weeks ago, the Ravens experienced a coronavirus outbreak among players and staff. Twenty-three players and staff were put on the COVID-19 list, including reigning MVP quarterback Lamar Jackson.

The team had to postpone its Thanksgiving Day against the Pittsburgh Steelers three times. It also prompted this week's game to be pushed back to Tuesday.

The U.S. has over 104,000 people hospitalized with COVID-19 as of Tuesday, setting a new daily record, according to The COVID Tracking Project.

The seven-day average of hospitalizations is also at a record high of 101,659, according to the health data.

The country reported 213,498 new cases and 2,622 new deaths Tuesday.

The seven-day averages for new cases and deaths hit records Tuesday, at 202,158 and 2,225, respectively, according to the health data.

The coronavirus vaccine will not substantially reduce the spread of the virus until the spring, according to the White House coronavirus task force's weekly briefing for governors. The report was obtained by ABC News.

The briefing said it will take at least 100 million Americans to be immunized before viral spread, hospitalizations or fatalities can go down.

"Behavioral change and aggressive mitigation policies are the only widespread prevention tools that we have to address this winter surge," the task force report said.

The task force noted that state and local governments aren't implementing the same mitigation policies that curbed cases back in the summer.

It also said 2,000 counties are in COVID-19 red zones.

"This current fall to winter surge continues to spread to every corner of the U.S., from small towns to large cities, from farms to beach communities," the report said.

-ABC News' Brian Hartman and Josh Margolin

U.S. Surgeon General Jerome Adams urged people to take the coronavirus pandemic seriously and follow public health guidelines as infections and hospitalizations soar across the country.

"I want the American people to know this virus is incredibly unforgiving, cases are going up, hospitalizations are going up, my colleagues are dog-tired and we need you to hang on just a little bit longer because we've got vaccines coming but we want as many people to be alive to get them as possible and a lot of that is going to depend on your behavior," Adams told ABC News chief anchor George Stephanopoulos in an interview Monday on "Good Morning America."

Although "more people than ever are wearing masks," Adams said he's "very" concerned by the number of people who still "don't understand how much spread is occurring by people who don't have symptoms."

About 20 million "full doses" of COVID-19 vaccines will be available by the end of the year, according to Adams, who urged every American to be immunized against the virus as soon as a vaccine is authorized and made available.

"It's a way that we can ultimately end this pandemic, but it doesn't matter if people won't get the vaccination," the surgeon general said. "We know that vaccine levels are only about 50% for adults for flu and they go down to about 40% for African-Americans."

Adams said he is working with historically black colleges and universities as well as faith communities to bolster vaccine confidence among all populations. The White House is also hosting a vaccine summit Tuesday, he said.

"One thing you can all do right now, it's national flu immunization week, get your flu shot because half a million people were hospitalized last year with the flu," Adams said. "We simply can't afford for that to happen this year with hospitals being overwhelmed."

The surgeon general said the current surge in infections across the country "is different than earlier surges," because it's not about a lack of masks or personal protective equipment, nor is it due to a lack of testing.

"It's really about health care capacity, and certain places are just being overwhelmed," he said. "So we know that we can actually help them with their health care capacity by immunizing their health care staff. We're going to leave it up to the states, but we're going to give them guidance."

Adams noted it's also important to vaccinate those who are most likely to die from COVID-19.

"We know that 40 to 50% of the deaths are occurring in people who are in longterm care facilities who are older," he said.