BIDEN'S CLAIM: "The expectation is we'll have another 200,000 Americans dead in the time between now and the end of the year. If we just wore these masks, the president's own advisers have told him, we could save 100,000 lives."
FACT CHECK: The president's advisers haven't used this estimate, though the head of the Centers for Disease Control and Prevention has strongly recommended wearing them. A by the University of Washington estimated at one point that if most Americans wore masks, it could save 100,000 lives by the end of the year. That estimate has been repeatedby Tom Frieden, who led the CDC under President Barack Obama.
Dr. Robert Redfield, the current head of the CDC under Trump, has not made such a statement.
According to his office, he has said that the pandemic could begin to come under control in eight to 12 weeks "if all people living in America wore a face mask, were smart about social distancing and crowds, and practiced good hand hygiene."