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WASHINGTON (AP/WJW) — As coronavirus cases surge in the days before Christmas, President Joe Biden announced plans to increase support for hospitals, improve access to COVID-19 tests and expand the availability of vaccines that can reduce the risks from the omicron variant.

Biden called it the “patriotic duty” of all Americans to get vaccinated.

The world is confronting the prospect of a second straight holiday season with COVID-19 as families and friends begin to gather while the variant quickly spreads. Scientists don’t yet know whether omicron causes more serious disease, but they do know that vaccination should offer strong protections against severe illness and death.

The administration is prepared to deploy an additional 1,000 troops in medical professions to hospitals as well as direct federal medical personnel to Michigan, Indiana, Wisconsin, Arizona, New Hampshire and Vermont. There are also plans to send out additional ventilators and equipment from the national stockpile besides expanding hospital capacity to handle infected patients.

The government will purchase 500 million rapid at-home tests to be delivered for free to the homes of Americans who request them. It will also establish new testing sites and use the Defense Production Act to help manufacture more tests. There will also be pop-up vaccination sites, hundreds of new people to administer the vaccines and new rules that make it easier for pharmacists to work across state lines.

Biden also said fully-vaccinated families should be able to celebrate safely, explaining that last Christmas was different because the vaccine was not available.

In a preview of Biden’s speech, White House press secretary Jen Psaki said at Monday’s press briefing that the Democratic president doesn’t plan to impose any lockdowns and will instead be encouraging people to get inoculated — and, if they’re eligible, to get their booster shot.

“This is not a speech about locking the country down. This is a speech about the benefits of being vaccinated,” Psaki told reporters.

Biden’s top medical adviser, Dr. Anthony Fauci, said over the weekend that Biden will issue “a stark warning of what the winter will look like” for unvaccinated Americans.

Biden has found himself in the delicate position of both alerting the country to the dangers posed by omicron and reassuring Americans that the vaccines will protect them. White House officials are looking to ease the nation back toward accepting the reality of an endemic virus with far lower stakes for the vaccinated. This has meant setting a difficult balance as cases rise and as deaths and serious illness among the unvaccinated dominate headlines.

Underscoring how widespread the virus is, the White House said late Monday that Biden had been in close contact with a staff member who later tested positive for COVID-19. The staffer spent about 30 minutes around the president on Air Force One on Friday on a trip from Orange, South Carolina, to Philadelphia. The staffer, who was fully vaccinated and boosted, tested positive earlier Monday, Psaki said.

Psaki said Biden has tested negative twice since Sunday and will test again on Wednesday. Citing guidance from the Centers for Disease Control and Prevention, Psaki said Biden didn’t need to quarantine and would continue with his regular schedule.

There are 40 million eligible but unvaccinated American adults. Efforts to increase vaccination rates have struggled to overcome a series of political, social and cultural divides. Psaki said the president plans to appeal to survival instincts.

“Our health experts assess that you are 14 times more likely to die of COVID if you have not been vaccinated versus vaccinated,” she said Monday.

Scientists say omicron spreads even easier than other coronavirus strains, including delta. It has already become the dominant strain in the U.S., accounting for nearly three-quarters of new infections last week.

Early studies suggest that the vaccinated will need a booster shot for the best chance at preventing an omicron infection but that even without the extra dose, vaccination should still largely protect people from serious sickness or death.

In New York City, nearly 42,600 people citywide tested positive from Wednesday through Saturday — compared with fewer than 35,800 in the entire month of November. The city has never had so many people test positive in such a short period of time since testing became widely available; there’s no clear picture of how many people got the virus during the city’s first surge in the spring of 2020.

The latest outbreak reflects the global challenges of stopping the coronavirus pandemic.