Biden says getting vaccinated 'gigantically important'

President Joe Biden has expressed pointed frustration over the slowing Covid-19 vaccination rate in the US and pleaded that it's "gigantically important" for Americans to step up and get inoculated for the virus as it surges once again.

Biden, speaking at a televised town hall in Cincinnati on Wednesday, said the public health crisis has turned largely into a plight of the unvaccinated as the spread of the Delta variant has led to a surge in infections around the country.

"We have a pandemic for those who haven't gotten the vaccination — it's that basic, that simple," he said on the CNN town hall.

The president also expressed optimism that children under 12 will be approved for vaccination in the coming months. But he displayed exasperation that so many eligible Americans are still reluctant to get a shot.

"If you're vaccinated, you're not going to be hospitalised, you're not going to be in the IC unit, and you're not going to die," Biden said at the forum at Mount St. Joseph University. "So it's gigantically important that ... we all act like Americans who care about our fellow Americans."

US hospitalisations and deaths are nearly all among the unvaccinated. But Covid-19 cases nearly tripled in the US over two weeks amid an onslaught of vaccine misinformation that is straining hospitals, exhausting doctors and pushing clergy into the fray.

Across the US, the seven-day rolling average for daily new cases rose over the past two weeks to more than 37,000 on Tuesday, up from less than 13,700 on July 6, according to data from Johns Hopkins University.

Also read: Dramatic drop in Covid deaths but US must stay vigilant about Delta variant: Biden

Health officials blame the Delta variant and slowing vaccination rates. Just 56.2 per cent of Americans have gotten at least one dose of the vaccine, according to the Centres for Disease Control and Prevention.

The president noted that the rise has become so concerning that even his critics are pushing back against vaccine disinformation.

Biden made an indirect reference to high-profile conservative personalities at Fox News who have "had an altar call" and are now more openly speaking to their sceptical guests about the benefits of getting vaccinated.

Sean Hannity recently told viewers, "I believe in the science of vaccination" and urged them to take the disease seriously. Steve Doocy, who cohosts "Fox & Friends", this week told viewers the vaccination "will save your life".

Biden, who travelled to Ohio as he's trying to rev up support for his economic agenda, visited a union training centre ahead of the town hall.

The trip comes as the fate of his infrastructure proposal remains unclear after Senate Republicans rejected a $1 trillion blueprint in a key test vote Wednesday. A bipartisan group of 22 senators said in a joint statement after the vote that they were close to coming to terms on a deal and requested a delay until Monday.

Biden expressed confidence in the outcome, saying, "It's a good thing and I think we're going to get it done."

While lawmakers wrangle over the details of that proposal on Capitol Hill, Biden made the case that his nearly $4 trillion package is needed to rebuild the middle class and sustain the economic growth the country has seen during the first six months of his presidency.

First, Biden toured the IBEW/NECA Electrical Training Centre on the west side of Cincinnati. He got a chance to get an up-close look at trainees working their way through five-year apprenticeships to learn the ins and outs of the sort of skilled, well-paid union jobs that he says will be in higher demand if his plan comes to fruition.

"There's a reason why union workers are the best trained," said Biden, as he met with apprentices going through five-year training programs.

It was his third trip to the state — one he lost by about 8 points in 2020, but one that remains pivotal to the Democratic Party's political future and a key test of whether Biden's economic proposals have the broad appeal the White House hopes.

With presidential visits to the Ohio cities of Columbus, Cleveland and now Cincinnati, the White House is betting that Biden's policies are popular with independent voters and that the electorate will reward a president and party that are trying to solve their problems.

The state faces a heated Senate election next year with the retirement of Republican Rob Portman, who helped negotiate the infrastructure plan that now faces an uncertain future in the evenly split Senate.

The president's visit took him near the dangerously outdated Brent Spence Bridge — a chokepoint for trucks and emergency vehicles between Ohio and Kentucky that the past two presidents promised without success to replace.

Biden made a passing reference to the structure, telling town hall attendees it's time to "fix that damn bridge of yours".