A Shot in the Arm, Will Ferrell and Harper Steele Road Tripping, Connie Chung

Hosted by Jane Pauley. In our cover story, Dr. Jon LaPook talks with experts who warn about the rise of vaccine skepticism. Also: Jane Pauley visits veteran journalist Connie Chung, author of a new memoir, “Connie”; Tracy Smith profiles comedian Will Ferrell and former “Saturday Night Live” head writer Harper Steele, subjects of a new documentary, “Will & Harper”; and Martha Teichner sits down with Pete Wells, who dishes on his 12 years as restaurant critic for The New York Times.