Covid-19 not yet 'vanquished', Biden warns in July 4 speech

Washington - “It’s the most patriotic thing you can do,” Biden said of getting vaccinated.

US President Joe Biden warned Sunday at an Independence Day celebration that Covid has yet to be "vanquished," even if Americans have made huge progress against the pandemic.

"We’ve gained the upper hand against this virus," he told a large, cheering crowd of guests on the White House lawn. But he added, "Don't get me wrong: Covid-19 has not been vanquished. We all know powerful variants have emerged, like the Delta variant."

Biden celebrated the nation's 245th birthday by opening the doors of the White House and calling on Americans to do their part to end the Covid-19 pandemic once and for all.

"This year the Fourth of July is a day of special celebration for we are emerging from the darkness of... a year of pandemic and isolation, a year of pain, fear and heartbreaking loss,” Biden told a White House party opened to around 1,000 people, including military families and workers involved in the Covid-19 response.

The largest White House event since Biden took office in January included burgers and fireworks and was geared towards giving Americans something to celebrate as signs of normalcy have returned following a coronavirus pandemic that has killed more than 600,000 Americans.

Still, the country has fallen short of Biden's goals to have 70 per cent of US adults get at least one vaccine shot by Sunday. The figure is around 67 per cent as some people have resisted getting shots, raising concerns among health officials as the more aggressive Delta variant threatens to generate another surge.

Biden mourned the people who died, praised Americans who aided in the country's emergency response and said vaccines were the best defence against new variants of the virus.

“It’s the most patriotic thing you can do,” Biden said of getting vaccinated.

But the Biden administration was also eager to celebrate what it sees as its signature accomplishment - restoring some normalcy for a country weary of pandemic restrictions and hardship, burdens that have eased but not disappeared with the widespread availability of inoculations.

The pandemic forced cancellation of nearly all celebrations last year and led to a toned-down January inauguration for the Democratic president, who had to do without traditional black-tie galas and bipartisan comity as Republican former President Donald Trump disputed his election loss.

Fortress-like security around Washington following the Jan. 6 attack on the US Capitol was eased as crowds marked the declaration of independence from Britain in 1776.

Fencing surrounding the White House has been dramatically scaled back, and on Sunday the streets filled with people who snapped pictures of the president's motorcade returning from a easygoing weekend trip to a Michigan cherry farm, the golf course and his Delaware family home.

After the speech, the president and guests were set to watch a 17-minute fireworks display set off from both sides of the Lincoln Memorial Reflecting Pool.

• Americas