White House hopeful Joe Biden on Thursday called for a nationwide mask-wearing mandate for the next three months, drawing a contrast with President Donald Trump as the challenger makes coronavirus pandemic recovery a focal point of his campaign.
Biden called on governors of all 50 states to "institute a mask mandate nationwide, starting immediately" as a way to halt the virus's spread and save tens of thousands of lives.
"Look, this is America. Be a patriot," Biden, with his newly named running mate Kamala Harris nearby and wearing a face covering, told reporters near his home in Delaware.
"Protect your fellow citizens, step up, do the right thing," Biden added.
Most scientists and health experts agree that, absent a vaccine, wearing a mask and maintaining social distance are two easy steps people can take to slow the spread of a pandemic that has already infected 20 million people and killed 750,000 worldwide.
Even as Covid-19 rages in the US, Trump has steadfastly ignored recommendations that people wear masks to help curb the spread of the virus. He himself did not wear one in public until July 11.
Thirty-four states have mask mandates, mostly requiring facial coverings indoors or outdoors around other people.
Some hotspots, like Florida and Georgia, have no mandate and their Republican governors have resisted pressure to impose one.
Fresh off Wednesday's campaign rollout that featured the Democratic ticket together for the first time showcasing their vision for the nation, Biden, 77, and Harris, 55, held a coronavirus working group with health experts who participated remotely.
"As the (former) vice president has been saying since the beginning of this pandemic, it should be the public health professionals that are leading policy in our country to address this lethal pandemic," Harris said.
The panel included former surgeon general Vivek Murthy, who has been an advisor to Biden throughout the coronavirus crisis.
Biden and Harris then entered a session on the pandemic's impact on businesses and employment in the world's largest economy.
Democrats widely accuse Trump of mishandling the US response to a pandemic that has claimed more than 166,000 lives nationwide.
Critics have blamed him for voicing falsehoods about the virus, including that children are "almost immune" to Covid-19 , and ignoring or sidelining some chief scientists and health officials in his administration.
By highlighting coronavirus recovery at the start of their campaign, Biden and Harris are signaling to voters that the crisis is a top priority -- and a major election issue.