Copyright 2020 NPR. To see more, visit MARY LOUISE KELLY, HOST: Nurses and doctors have been at the epicenter of the coronavirus pandemic. And yet even as health care workers fight back against the virus, the health care industry is crumbling around them. Today we learned that of the more than 20 million jobs that vanished last month, nearly 1 1/2 million were in health care. AILSA CHANG, HOST: And despite this dismal news for American workers, we heard a more optimistic message from the president today, who spoke about his belief that the country may soon turn an economic corner. (SOUNDBITE OF ARCHIVED RECORDING) PRESIDENT DONALD TRUMP: So we're looking at the transition to greatness, and I think it's starting right now. CHANG: Meanwhile, the virus is inching closer and closer to the president, with another White House aide testing positive today for COVID-19. All right. To talk more about all of this, we're joined now by NPR chief economics correspondent Scott Horsley, science