U.S. President Donald Trump announces a list of potential Supreme Court nominees in the Diplomatic Reception Room of the White House Wednesday. Trump also fielded questions about the coronavirus and Bob Woodward's new book about him.

WASHINGTON — President Donald Trump said in a taped interview that he deliberately downplayed the danger of the coronavirus in public early this year despite knowing it posed a deadly threat to Americans, a revelation that sent shock waves Wednesday through a presidential campaign entering the home stretch.

The damaging disclosure came in one of 18 recorded interviews that Trump gave to veteran journalist Bob Woodward between December and July for a book scheduled for publication Tuesday. It exploded into public view on a day when the confirmed U.S. death toll from COVID-19 exceeded 190,000, a once-unimaginable tally.

The audio recordings included the president’s admission in February that he knew the coronavirus was “more deadly” than the common flu, even though he was claiming otherwise in public.

Several weeks later, Trump also acknowledged he was downplaying the pandemic on purpose.

“I wanted to always play it down,” Trump told Woodward on March 19. “I still like playing it down, because I don’t want to create a panic.”

In their final interview, on July 21, Trump vented to Woodward: “The virus has nothing to do with me. It’s not my fault.”

Former Vice President Joe Biden, the Democratic nominee, denounced Trump’s comments during a campaign stop in Michigan, while the White House, unable to dismiss the president’s own words as a news report based on unnamed sources, scrambled to respond.

“It was a life and death betrayal of the American people,” Biden said during an appearance with union members in Warren, Michigan. “He knowingly and willingly lied about the threat it posed to the country for months.

“He knew how dangerous it was,” Biden continued. “While this deadly disease ripped through our nation, he failed to do his job on purpose.”

Biden cited researchers who contended that tens of thousands of lives might have been saved if the White House had acted more swiftly to lock down offices, factories and schools back in March.

For all the furor, the audio tapes — which are certain to be featured in Democratic campaign ads — may not dramatically change the trajectory of the fall campaign. Trump won in 2016 weeks after a video revealed his off-screen comments on “Access Hollywood” bragging that his celebrity enabled him to assault women.

For most voters, Trump’s coarse, blunt and often incendiary rhetoric and behavior are already baked in to their assessments of a highly unconventional and controversial president.

But with just 54 days left in a contest that has tightened in some battleground states as Trump has fought to re-frame the race around issues of crime and safety, the revelation immediately shifted the focus back to Biden’s preferred battleground, the president’s response to the deadly pandemic.

The impact may be heightened at a moment when millions of families, already locked down or severely constrained since March, have been forced to begin a new school year in virtual form from their homes. Moreover, the economy continues to struggle: Although unemployment has declined, more than 13.6 million Americans are out of work.

According to CNN excerpts of Woodward’s book “Rage,” Trump’s national security adviser, Robert O’Brien, warned him on Jan. 28 that the coronavirus posed the “biggest national security threat” of his presidency, but Trump later told Woodward he didn’t recall the warning.

At the White House, press secretary Kayleigh McEnany argued that Trump’s comments on the tape were consistent with his public statements from the time, saying he sought to keep the country calm and did not intentionally withhold dire warnings that might have prompted the public to take more adequate precautions.

“The president has never lied to the American public on COVID,” McEnany said. “The president was expressing calm and his actions reflect that.”

McEnany flatly denied that Trump did what he can be heard admitting to Woodward he was doing: “The president never downplayed the virus,” she said. “At a time when you’re facing insurmountable challenges, it’s important to express confidence, it’s important to express calm.”

Sen. Lindsey Graham, R-S.C., was one of few Republican lawmakers to discuss the audio tapes, arguing that Trump’s actions, more than his comments, showed the country he was taking the virus seriously.

“I don’t think he needs to go on TV and scream, ‘We’re all going to die,’ ” Graham said. “But his actions of shutting the economy down were the right actions. I think the tone at the time sort of spoke for itself. People knew it was serious.”

Democrats were less charitable.

“He didn’t know how to cope with a challenge to our country,” House Speaker Nancy Pelosi, D-Calif., told MSNBC. “Secondly, his disdain and denial for science, which has the answers. We could have contained this early on. But, bigger than all of that, bigger than all of that was his total disregard for the impact on individual families in our country.”

The Woodward book also includes stinging criticisms of Trump from current and former officials who worked closely with him.

According to excerpts in The Washington Post, former Secretary of Defense James Mattis called Trump “dangerous” and “unfit.” At one point, Mattis spoke with Dan Coats, then the director of national intelligence, about whether they take “collective action” and speak out publicly against Trump, who Coats said “doesn’t know the difference between the truth and a lie.”Dr. Anthony Fauci, a key figure on the White House coronavirus task force whose warnings have frustrated the president, reportedly grumbled to Woodward about Trump’s attention span being “like a minus number.”

Woodward also includes an anecdote about Trump lambasting the nation’s top military officials in a meeting, saying: “My f---ing generals are a bunch of p---ies” who care more about military alliances than trade deals.