CBS Sunday Morning, May 3, 2020

Rita Braver examines how scientists won the war against the 20th century polio epidemic. Seth Doane interviews survivors of coronavirus. Jane Pauley talks with Marlo Thomas and Phil Donahue, who are celebrating their 40th wedding anniversary, about their book that explores the secrets behind successful marriages. Tracy Smith chats with “Barry” and “Happy Days” star Henry Winkler. Jill Schlesinger examines retail winners and losers from the pandemic. Those stories and more on "CBS Sunday Morning."