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 independent FDA advisory panel is meeting Friday and will hold a nonbinding vote on whether the Johnson & Johnson booster shot should be used.
Officials with the National Institutes of Health will also present data Friday on whether it's safe and effective to mix-and-match vaccine booster doses.
-ABC News' Sasha Pezenik, Cheyenne Haslett
The U.S. Centers for Disease Control and Prevention is advising states to order Pfizer's COVID-19 vaccine doses for children ages 5 to 11 ahead of a vote on its authorization.
An independent Food and Drug Administration advisory panel is scheduled to discuss the vaccine on Oct. 26, and a vote is expected soon after. In planning documents posted by the CDC, the agency is advising states to order their doses in advance of the meeting, with preorders starting Oct. 20.
This is meant to "ensure that vaccine can be placed in many locations nationwide, making it easier for children to get vaccinated" and "allow for a manageable and equitable launch," the CDC said.
A decision from the CDC on recommending the vaccine is not likely until early November; the CDC's Advisory Committee on Immunization Practices is scheduled to meet on Nov. 2 and Nov. 3.
-ABC News' Sasha Pezenik
The independent FDA advisory panel on Thursday voted unanimously to authorize Moderna vaccine boosters for Americans 65 and older, anyone 18 and older with underlying conditions and those frequently exposed to the virus through work or home life.
The recommendation is in line with what the FDA and CDC authorized for Pfizer booster shots last month.
The FDA panel will meet on Friday on J&J boosters. Following next week's meetings from the CDC’s independent advisory group, Moderna and J&J boosters could be authorized and recommended for specific populations as soon as Oct. 22.
-ABC News' Sasha Pezenik, Cheyenne Haslett
When President Joe Biden meets with his Kenyan counterpart in the Oval Office Thursday, he'll announce a one-time donation of over 17 million doses of the Johnson & Johnson vaccine to the African Union. This is in addition to the 50 million doses the U.S. has already donated to the African Union.
"We are hopeful this donation will help AU countries build vaccination programs and get shots into arms," the White House said.
The doses will ship immediately.
-ABC News' Sarah Kolinovsky
