In this episode of Talk Nerdy, Cara is joined by Dr. Jonathan Howard, associate professor of neurology and psychiatry at NYU Langone Health and chief of neurology at Bellevue Hospital. They discuss his new book, "We Want Them Infected: How the Failed Quest for Herd Immunity Led Doctors to Embrace the Anti-Vaccine Movement and Blinded Americans to the Threat of COVID." Follow Jonathan: @19joho.