The unvaccinated were six times more likely to get the virus in August.
The United States has been facing a COVID-19 surge as the more contagious delta variant continues to spread.
More than 722,000 Americans have died from COVID-19 while over 4.8 million people have died from the disease worldwide, according to real-time data compiled by the Center for Systems Science and Engineering at Johns Hopkins University.
Just 66.5% of Americans ages 12 and up are fully vaccinated against COVID-19, according to data from the CDC.
The daily death toll in Russia topped 1,000 for the first time, The Associated Press reported.
There were 1,002 deaths as of Saturday, up from 999 Friday, Russia's national coronavirus task force reported.
About 29% of the country is fully vaccinated, according to its government and there are currently 754,162 active cases, Russian news agency TASS reported.
Arizona Cardinals head coach Kliff Kingsbury will miss Sunday's road game against the Cleveland Browns after he tested positive for COVID-19, the team announced Friday night.
Kingsbury, 42, has led the hottest team in the NFL this season. Arizona (5-0) is the only undefeated team left in the league.
Sunday's game figures to be one of the biggest of the week, with the 3-2 Browns suffering only two narrow losses coming off a playoff appearance last year and expectations to contend for a title.
The Cardinals will also be without quarterbacks coach Cam Turner and defensive lineman Zach Allen, who each tested positive Friday. Star outside linebacker Chandler Jones was put on the COVID list earlier this week and won't play.
Kingsbury told reporters exactly three weeks ago that 100% of the Cardinals' roster was vaccinated.
Defensive coordinator Vance Joseph and special teams coordinator Jeff Rodgers will split head coaching duties against Cleveland.
The CDC has updated its holiday guidance, urging people to get vaccinated and to wear masks in public indoor places.
The CDC said in a statement: "We fully expect that families and friends will gather for the holidays this year and we have updated our guidance on how to best to stay safe over the holidays. The best way to minimize COVID risk and ensure that people can safely gather is to get vaccinated or get the booster if you’re eligible.”
-ABC News' Anne Flaherty
An independent FDA panel has voted to move forward with Johnson & Johnson vaccine boosters.
The panel’s decision on J&J was broader than for Moderna and Pfizer as it applies to all J&J recipients 18 and older. The timing is also different: The J&J booster can be administered two months after the initial shot.
The 19-person panel voted unanimously.
Johnson & Johnson's one dose has shown to be 85% effective against severe illness, but adding a second dose boosted that to 100%.
Penny Heaton, a J&J executive, acknowledged Friday that J&J’s efficacy is below the mRNA vaccines but said they would be on par if they used a booster.
-ABC News' Anne Flaherty, Cheyenne Haslett, Sasha Pezenik
