Trump's taped admission to Woodward that he minimized the pandemic in public, while being aware from the start about the unique danger presented by Covid-19, has set off alarm bells less than eight weeks before election day.

Asked at a hastily organized White House press conference "Why did you lie to the American people?" Trump responded: "I didn't lie."

The Republican, who is down in the polls against Democrat Joe Biden and faces overwhelming disapproval from Americans on his handling of the coronavirus crisis, insisted that he'd softened the dangers in public so as to preserve calm.

"I don't want to jump up and down and start screaming 'Death! Death!'" he argued.

But Trump has been thrown onto the defense after multiple excerpts and recordings from Woodward's book "Rage" were released on Wednesday.

Following two Fox News interviews, dozens of tweets, and the press conference, Trump continued his bid to get his election message back on track by holding a rally with supporters in Freeland, Michigan.

He told the excited crowd that his approach to Covid-19 matched that of the British government in World War II with its famous "Keep calm and carry on" morale-boosting posters.

Apparently meaning Woodward, he referred in his speech to "this whack job that wrote the book."

"Rage" is filled with startling episodes, including the assessment by Trump's then director of national intelligence, the respected Dan Coats, that the president "doesn't know the difference between the truth and a lie."

But the segments in which Trump candidly discusses the coronavirus pandemic - responsible for killing almost 200,000 Americans - are getting the most attention.

Despite openly describing to Woodward the dangerous characteristics of the then unknown virus, including the fact that it is transmitted by air, Trump said "I wanted to always play it down."

Trump went on to explain to Woodward that he wanted to avoid causing panic. However, his acknowledgement that he failed to tell the country the unvarnished truth prompted outrage.

Critics quickly resurrected his multiple statements from the early stages of the pandemic in which he told the public that it was no worse than a regular flu and breezily predicted it would "disappear" in a short period.

"He knew how deadly it was," Biden said Wednesday.

"He lied to the American people. He knowingly and willingly lied about the threat it posed to the country for months."

Trump usually fights criticism by blaming what he calls "the fake news" and claiming that unnamed sources commonly used in White House reporting don't exist.

But shoot the messenger won't work in the case of "Rage." The revelations rely mostly on Trump himself and Woodward - famous for bringing down Richard Nixon in the Watergate scandal - has published recordings.

In one dig at Woodward on Thursday, Trump tweeted that if the legendary reporter thought that the quotes were "so bad or dangerous, why didn't he immediately report them in an effort to save lives?"

"Because he knew they were good and proper answers. Calm, no panic!" Trump argued.