New Mexico's growing coronavirus hospitalization has forced the state to enact a crisis of standard care, the state's health department announced Monday.

"In particular, the volume of COVID-19 patients - almost all of whom are unvaccinated - have exacerbated existing staffing and other resource shortages," the health department said in a news release.

Medical facilities statewide must now use a "more standardized and equitable procedure," before deciding who gets care and temporarily suspend procedures that are not medically necessary, according to the health department.

More details on the crisis of standard care will be revealed later this week, the health department said.

-ABC News' Jennifer Watts

Just hours before the midnight deadline for its public employee vaccine mandate, the city of Seattle revealed Monday that 99% of its 11,000 employees have complied with the order.

Approximately 150 public employees had yet to submit documents showing their vaccination status as of Monday evening, according to city officials. About 5% of public employees were granted exemption, the city said.

When it came to specific departments, the city said 91% of Seattle Police Department employees were vaccinated and 7% received exemptions. As of Monday evening, 24 Seattle PD employees (2% of the department) did not submit vaccination documents to the city, according to officials.

The Seattle Fire Department reported 93% of its employees complied with the vaccine mandate and 6% received exemptions, the city said. As of Monday evening, 16 Seattle Fire employees (1% of the department) did not submit their vaccination documents, according to city officials.

-ABC News' Matthew Fuhrman

The Centers for Disease Control and Prevention updated its definition of what it means to be “fully vaccinated” to include people who got the AstraZeneca and Novavax doses in clinical trials.

A person also should be considered fully immunized even if they mix their vaccines, the CDC announced Monday.

In general, people are considered fully vaccinated two weeks after their second dose in a two-dose series, such as the Pfizer-BioNTech or Moderna vaccines, or two weeks after a single-dose vaccine, such as Johnson & Johnson’s vaccine

The new guidance applies to COVID-19 vaccines currently approved or authorized for emergency use by the U.S. Food and Drug Administration — Pfizer-BioNTech, Moderna, and Johnson & Johnson — and can be applied to COVID-19 vaccines that have been listed for emergency use by the World Health Organization, such as AstraZeneca and Oxford.

The CDC is not recommending vaccines that are not FDA-authorized and has not yet made a decision on official guidelines for mixing doses.

The new guidance on interpreting vaccine records does not impact CDC recommendations on primary series vaccination and should not guide clinical practice, according to the CDC.

— ABC News’ Anne Flaherty

Coronavirus infections are steadily falling across the country, thanks to significant declines in highly populated states such as Florida, Texas, Louisiana and Mississippi.

The number of daily cases in the U.S. has dropped 50% since Sept. 1, with a 43% drop in hospitalizations and a 21% drop in daily deaths.

However, an uptick in cases in Northern states is causing some concern.

In recent weeks, coronavirus infections have been creeping up in several states in the Upper Midwest and the Northeast. Eight states — Alaska, Colorado, Idaho, Michigan, Minnesota, New Hampshire, New Mexico, and Vermont — have seen notable jumps in their case averages.

Experts have been warning for weeks that Northern states could begin to see upticks in the coming weeks as winter approaches, and people start to head indoors.

Alaska currently has the country's highest case rate, followed by Montana, Wyoming, Idaho, West Virginia, and North Dakota, which all with case rates above 400 per 100,000 people.

Daily deaths are slowly falling, but remain persistently high. The nation is still reporting an average of 1,250 new deaths each day, and over the last four days alone, the U.S. reported just under 7,000 confirmed COVID-19 deaths.

The death average is still about 6.5 times higher than in mid-July, when the national average had dropped to a near pandemic low of 192 deaths reported each day.

Nationally, hospitalization numbers have dropped to under 60,000 patients with COVID-19 currently receiving care, down from 104,000 patients in late August. Hospital admissions have also fallen by about 10.4% in the last week.

Approximately 113.5 million Americans remain completely unvaccinated. Just under 65.2 million of those people are over the age of 12. The other 48 million unvaccinated people are children under the age of 12.

— ABC News’ Arielle Mitropolous

The Pfizer COVID-19 vaccine is nearly 91% effective against symptomatic illness in children ages 5-11, according to new data posted Friday ahead of a major FDA advisory committee meeting on Tuesday.

The vaccine also appeared safe, with none of the children experiencing a rare heart inflammation side effect known as myocarditis. If authorized in children 5-11, the Pfizer vaccine will be given at a smaller, one-third dose.

This efficacy estimate is from the company's clinical trial of 2,268 children in which some children got a placebo, and some children got the Pfizer vaccine. During the trial, 16 children who got the placebo shots developed COVID-19. Only three children who got the real vaccine developed COVID-19.

A small number of the children who were vaccinated and later developed COVID-19 experienced symptoms far fewer and milder than the children who were unvaccinated. For example, none of the vaccinated children developed a fever, while a majority of the unvaccinated children developed a fever along with other symptoms.

None of the children experienced serious adverse events. Many experienced typical symptoms like pain at the injection site, fatigue and headache.

The FDA's advisers will meet Tuesday to vote on whether to authorize the vaccine. From there, the FDA itself and the CDC will need to sign off -- a process that can take several days -- before shots could become available to children nationally.

- ABC News' Sony Salzman