Unvaccinated people 11 times more likely to die in COVID-19 delta surge
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.
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Philadelphia Marathon requiring in-person participants to be fully vaccinated
All in-person runners must be fully vaccinated two weeks ahead of next month's Philadelphia Marathon, officials announced. Runners with only a negative test won't qualify.
The race is set for Nov. 21.
Daily death average nearly 8 times higher than in mid-July
Although daily deaths have declined by about 17% in the last four weeks, the U.S. is still reporting an average of 1,465 new deaths each day, according to federal data. Over the last four days alone, the U.S. reported another 7,500 confirmed COVID-19 deaths.
The death average is nearly eight times higher than in mid-July when the national average had dropped to a near pandemic low of 192 daily deaths, according to federal data.
But hospitalization admissions have dropped by about 11.4% in the last week, according to federal data.
There are currently about 65,000 COVID-19 patients in U.S. hospitals, down from 104,000 patients in late August.
In the Mountain Region -- Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming -- hospital admissions are steadily trending up, federal data show. In the Northeast, hospital admissions are no longer trending down.
-ABC News' Arielle Mitropoulos
Boston Marathon returns with COVID protocols in place
The Boston Marathon returned with 18,000 runners on Monday following a two-year hiatus.
The field size was reduced by 36% this year while another 28,000 runners participated in the race virtually.
Runners were required to provide proof of vaccination or a negative COVID-19 test. Although masks were not mandated for the 26.2-mile course, face coverings were enforced on participant transportation, as well as for volunteers who interacted with participants.
According to the Boston Marathon Association, 95% of all Boston Marathon volunteers were vaccinated and 100% of Boston Marathon medical volunteers were vaccinated.
American Airlines continues with vaccine mandate despite governor's executive order
Texas-based American Airlines is sticking to its plan to require vaccines for employees under the Biden administration's vaccine mandate, despite a new executive order from Texas Gov. Greg Abbott banning mandates.
American said in a statement, “We are reviewing the executive order issued by Gov. Abbott, but we believe the federal vaccine mandate supersedes any conflicting state laws, and this does not change anything for American.”
On Monday, Abbott issued an executive order banning vaccine mandates "by any entity" in the state. Abbott said, "The COVID-19 vaccine is safe, effective, and our best defense against the virus, but should remain voluntary and never forced."
-ABC News' Sam Sweeney