Biden also announced that starting next week 1,000 military medical personnel will begin deploying across the country to help overwhelmed medical facilities ease staff shortages due to the highly transmissible omicron variant.
Many facilities are struggling because their workers are in at-home quarantines due to the virus at the same time as a nationwide spike in COVID-19 cases. The new deployments will be on top of other federal medical personnel who have already been sent to states to help with acute shortages.
WATCH: Biden's full COVID response remarks
Speaking at the White House Thursday, Biden acknowledged that, "I know we're all frustrated as we enter this new year" as virus cases reach new heights. But he insisted that it remains "a pandemic of the unvaccinated."
Both vaccinated and unvaccinated people test positive for the virus, but Biden noted medical figures showing that people are far less likely to suffer serious illness and death if they've received a shot: "What happens after that could not be more different."
Biden's comments come as his administration's focus is shifting to easing disruptions from the spike in cases that is also contributing to grocery shortages and flight cancellations, rather than preventing the transmission of the virus.
On Tuesday, Janet Woodcock, the acting head of the Food and Drug Administration, told Congress that the highly transmissible strain will infect "most people" and that the focus should turn to ensuring critical services can continue uninterrupted.
"I think it's hard to process what's actually happening right now, which is: Most people are going to get COVID, all right?" she said. "What we need to do is make sure the hospitals can still function - transportation, other essential services are not disrupted while this happens."
Biden said that he is directing his team to double its procurement of rapid COVID-19 tests to be delivered for free to Americans through a forthcoming federal website, as he seeks to respond to criticism over shortages and long lines for tests. The initial order was for 500 million tests, and now the federal government will purchase 1 billion at-home testing kits. Biden said the website will launch next week.
Biden also announced that for the first time his administration was planning to make high-quality N95 masks, which are most effective at preventing transmission of the virus, available for free. He said his administration would announce details next week.
The federal government has a stockpile of more than 750 million N95 masks, the White House said this week. And though research has shown those masks to be better protection, they are often more uncomfortable, and health officials are not altering their guidance to recommend against less-protective cloth masks.
The best mask "is the one that you will wear and the one you can keep on all day long, that you can tolerate in public indoor settings," Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, said Wednesday.
Biden encouraged Americans to wear masks when indoors to slow the spread of the virus, even as he acknowledged they're a "pain in the neck"
During Thursday's remarks Biden was joined by Defense Secretary Lloyd Austin, who recently recovered from his own case of COVID-19, and FEMA Administrator Deanne Criswell. They were hearing about the work of the more than 800 military personnel who have been helping civilian hospitals since Thanksgiving and the more than 14,000 National Guard members whose work supporting vaccinations, testing and caring for patients is being covered by the federal government.
The White House said they spoke with federal personnel who are already on the ground in Arizona, Michigan and New York to hear about their experiences.
Biden also announced that six additional military medical teams will be deployed to Michigan, New Jersey, New Mexico, New York, Ohio and Rhode Island.
The White House said the teams will support Henry Ford Hospital just outside Detroit, University Hospital in Newark, the University of New Mexico hospital in Albuquerque, Coney Island Hospital in Brooklyn, Cleveland Clinic and Rhode Island Hospital in Providence.