CDC Director Rochelle Walensky warned Monday of “impending doom” as coronavirus cases continue to rise across the country. Meanwhile, former Trump administration pandemic coordinator Dr. Deborah Birx said in an interview Sunday that the vast majority of American coronavirus deaths could have been prevented through a more aggressive response from the White House at the beginning. Dr. Thomas Tsai, a surgeon at Brigham & Women’s Hospital and a public health researcher at Harvard’s T.H. Chan School of Public Health, joined Jim Braude to discuss all this and more.