WASHINGTON, DC, United States (AP) — In his most forceful pandemic actions and words, President Joe Biden yesterday announced sweeping new federal vaccine requirements affecting as many as 100 million Americans in an all-out effort to increase COVID-19 vaccinations and curb the surging Delta variant.

Speaking at the White House, Biden sharply criticised the roughly 80 million Americans who are not yet vaccinated, despite months of availability and incentives.

“We’ve been patient. But our patience is wearing thin, and your refusal has cost all of us,” he said, all but biting off his words. The unvaccinated minority “can cause a lot of damage, and they are.”

The expansive rules mandate that all employers with more than 100 workers require them to be vaccinated or test for the virus weekly, affecting about 80 million Americans. And the roughly 17 million workers at health facilities that receive federal Medicare or Medicaid also will have to be fully vaccinated.

Biden is also signing an executive order to require vaccination for employees of the executive branch and contractors who do business with the federal government — with no option to opt out. That covers several million more workers.

Biden announced the new requirements yesterday in an afternoon address from the White House as part of a new “action plan” to address the latest rise in coronavirus cases and the stagnating pace of COVID-19 shots that has raised doubts among the public over his handling of the pandemic.

Just two months ago, Biden prematurely declared the nation’s “independence” from the virus. Now, despite more than 208 million Americans having at least one dose of the vaccines, the US is seeing about 300 per cent more new COVID-19 infections a day, about two-and-a-half times more hospitalisations, and nearly twice the number of deaths compared to the same time last year.

“We are in the tough stretch and it could last for a while,” Biden said of the current state of the pandemic.

After months of using promotions to drive the vaccination rate, Biden is taking a much firmer hand, as his aides blamed people who have not yet received shots for the sharp rise in cases that is killing more than 1,000 people per day and imperiling a fragile economic rebound.

In addition to the vaccination requirements, Biden moved to double federal fines for airline passengers who refuse to wear masks on flights or to maintain face covering requirements on federal property in accordance with Centers for Disease Control and Prevention guidelines.

He announced that the federal government will work to increase the supply of virus tests, and that the White House has secured concessions from retailers including Walmart, Amazon, and Kroger to sell at-home testing kits at cost beginning this week.

The Administration was also sending additional federal support to assist schools in safely operating, including additional funding for testing. And Biden will call for large entertainment venues and arenas to require vaccinations or proof of a negative test for entry.

The requirement for large companies to mandate vaccinations or weekly testing for employees will be enacted through a forthcoming rule from the Occupational Safety and Health Administration that carries penalties of $14,000 per violation, an administration official said. The White House did not immediately say when it would take effect, but said workers would have sufficient time to get vaccinated.

The rule would also require that large companies provide paid time off for vaccination.

Meanwhile, the Centers for Medicare & Medicaid Services will extend a vaccination requirement issued earlier this summer — for nursing home staff — to other healthcare settings including hospitals, home-health agencies and dialysis centers.

Separately, the Department of Health and Human Services will require vaccinations in Head Start Programs, as well as schools run by the Department of Defense and Bureau of Indian Education, affecting about 300,000 employees.

Biden’s order for executive branch workers and contractors includes exceptions for workers seeking religious or medical exemptions from vaccination, according to Psaki. Federal workers and contractors will have 75 days to get fully vaccinated. Workers who don’t comply will be referred to their agencies’ human resources departments for counseling and discipline, to include potential termination.

“We would like to be a model” to other organisations and business around country, Psaki said of the federal workforce.

An AP-NORC poll conducted in August found 55 per cent of Americans in favour of requiring government workers to be fully vaccinated, compared with 21 per cent opposed. Similar majorities also backed vaccine mandates for health-care workers, teachers working at K-12 schools and workers who interact with the public, as at restaurants and stores.

Biden has encouraged COVID-19 vaccine requirements in settings like schools, workplaces and university campuses, and the White House hopes the strengthened federal mandate will inspire more businesses to follow suit. The Los Angeles Board of Education was expected to vote on requiring all students 12 and older to be fully vaccinated in the the nation’s second-largest school district.

Walmart, the nation’s largest private employer, said in late July it was requiring that all workers at its headquarters in Bentonville, Arkansas, as well as its managers who travel within the US be vaccinated against COVID-19 by October 4. But the company stopped short of requiring shots for its frontline workers.

CVS Health said in late August it would require certain employees who interact with patients to be fully vaccinated by the end of October. That includes nurses, care managers and pharmacists.

In the government, several federal agencies have previously announced vaccine requirements for much of their staffs, particularly those in health-care roles like the Department of Veterans Affairs, and the Pentagon moved last month to require all servicemembers to get vaccinated. Combined, the White House estimates those requirements cover 2.5 million Americans. Thursday’s order is expected to impact nearly two million more federal workers and potentially millions of contractors.

Biden’s measures should help, but what’s really needed is a change in mindset for many people, said Dr Joshua Sharfstein, vice-dean at the Johns Hopkins Bloomberg School of Public Health in Baltimore.

“There is an aspect to this now that has to do with our country being so divided,” said Sharfstein. “This has become so politicised that people can’t see the value of a vaccination that can save their lives. Our own divisions are preventing us from ending a pandemic.”

American Federation of Government Employees, the largest union of federal employees, said that while it strongly encourages vaccinations, workers should have a say in new mandates affecting them.

“Put simply, workers deserve a voice in their working conditions,” said national President Everett Kelley. “We expect to bargain over this change prior to implementation, and we urge everyone who is able to get vaccinated as soon as they can do so.”

Larry Cosme, president of the Federal Law Enforcement Officers Association, called the mandate for federal workers “ill-conceived”, saying, “Vaccination should be promoted through education and encouragement – not coercion”.