Connecticut Gov. Ned Lamont announced new COVID-19 vaccine requirements for state employees Thursday.

State employees in hospital facilities will be required to get vaccinated, while all other state employees, K-12 teachers and staff and early childhood staff will need to get tested weekly if they are not vaccinated, he said.

The requirements go into effect Sept. 27 and are on top of a previously announced vaccine mandate for long-term care employees.

"We've done very well, thank you Connecticut, in terms of people getting vaccinated," Lamont said at a press briefing. "We've got to do better."

More than 74% of Connecticut residents ages 12 and up are fully vaccinated, according to Centers for Disease Control and Prevention data.

Five states have fewer than 10% of their intensive care unit beds available, according to federal data.

Alabama has reached 100% ICU capacity, while Georgia is at 94% capacity, Florida at 93.18%, Mississippi at 93.01% and Texas at 92.72%, according to the latest data from the U.S. Department of Health and Human Services.

Nationwide, nearly 78% of staffed adult ICU beds are occupied, according to HHS, as the U.S. continues to experience its steepest increase in COVID-19-related hospitalizations since the winter of 2020. There are nearly 93,000 patients now hospitalized across the country with COVID-19, according to federal data.

Overnight, the U.S. recorded its fourth day with more than 140,000 new COVID-19 cases in the last seven days. The country's new case average has now surged to 130,000, up 13.2% in the last week, an ABC News analysis found.

-ABC News' Arielle Mitropoulos

More than 1 million COVID-19 vaccine doses were administered in the past 24 hours, including 562,000 first doses, a White House official confirmed to ABC News Thursday.

It's the first time 1 million doses in a single day have been logged in close to seven weeks, the official added, "a 31% week-over-week increase in the daily average of people completing their vaccine series."

-ABC News' Justin Gomez

The United States' early vaccine program likely helped prevent nearly 140,000 deaths during the first five months that shots were available, according to research published in the journal Health Affairs Wednesday.

Death reduction differed by state. New York saw the greatest reduction in COVID-19 deaths, while Hawaii saw the smallest benefit. "Overall, our analysis suggests that the early COVID-19 vaccination campaign was associated with reductions in COVID-19 deaths," the researchers wrote.

-ABC News' Eric Strauss

Another field hospital with critical care capacity is now under construction on the University of Mississippi Medical Center’s campus – just days after the first in the state was opened in the parking garage of the medical center.

The opening comes in response to a record number of COVID-19-related hospitalizations across the state, and an "increasingly dire" crisis, the hospital said on Monday.

On Monday, Samaritan’s Purse began setting up the second surge facility for adult patients in another parking lot on the UMMC campus. Medical staff from the organization will provide care for up to 32 patients at a time. The facility will include five intensive care beds.

"We have approximately 30 patients statewide, including upwards of 10 individuals at UMMC, waiting for ICU beds at any given time," Dr. LouAnn Woodward, vice chancellor of health affairs and dean of the School of Medicine at UMMC, said in a statement. "These startling numbers prove just how critical the COVID-19 crisis is in the state."

Hospitals around the state will continue to transfer severely ill COVID-19 patients to UMMC for a higher level of care.

-ABC News’ Arielle Mitropoulos