COVID-19 updates: Austria orders nationwide lockdown for unvaccinated residents

As COVID-19 cases increase across the country, at least four states are moving to recommend booster shots for all adults ahead of federal authorization.

Colorado Gov. Jared Polis signed an executive order on Thursday declaring the entire state at high risk from COVID-19, thereby making all fully vaccinated adults eligible to receive a booster shot.

"We want to ensure that Coloradans have every tool they need to protect themselves from this deadly virus and to help reduce the stress on our hospitals and health care workers," Polis said in a statement.

Every Coloradan ages 18 and up who is at least six months past the second dose of the Pfizer-BioNTech or Moderna vaccine, or two months past the single-dose Johnson & Johnson vaccine, can now receive a booster shot.

"I was relieved to get the booster two weeks ago," Polis said, "and strongly encourage you to get it too."

On Friday, the governor of New Mexico issued a similar order, and officials in California and West Virginia have previously encouraged residents to receive a booster shot.

Meanwhile, Pfizer asked the Federal Drug Administration for booster authorization for all adults on Tuesday.

The U.S. is currently averaging around 76,000 new COVID-19 cases a day, up by nearly 20% since mid-October, according to an ABC News analysis of federal data.

North Dakota now has the country's highest infection rate, followed by Minnesota, Alaska and Vermont.

COVID-19 hospitalizations nationwide also increased for the fourth consecutive day Friday. More than 47,000 patients with COVID-19 are currently receiving care.

-ABC News' Arielle Mitropoulos

Thursday marked the third consecutive day where COVID hospitalizations rose nationwide.

Fourteen states reported a 10% increase in hospital admissions over the last week. The states are Arizona, Colorado, Connecticut, Iowa, Kansas, Michigan, Minnesota, Missouri, New Hampshire, Rhode Island, South Dakota, Utah, Vermont and Wisconsin.

Total hospitalizations are down nearly 55% since mid-August.

-ABC News' Arielle Mitropoulos

COVID-19 forecast models used by the Centers for Disease Control and Prevention are currently predicting that weekly death totals will likely continue to fall in the weeks to come, though thousands of Americans are still expected to lose their lives.

The ensemble model expects just under 15,000 more virus-related deaths to occur in the U.S. over the next two weeks, with a total of around 781,500 deaths by Dec. 4.

The model estimates that 13 states and territories of the U.S. have a greater than 50% chance of having more deaths in the next two weeks compared to the past two weeks.

-ABC News' Arielle Mitropoulos