In On Immunity, Eula Biss delves into the complex and often contentious topic of vaccination, exploring its scientific, cultural, and personal dimensions. Blending research, history, and memoir, Biss examines the fears and myths surrounding vaccines, while highlighting their critical role in public health. This episode explores her nuanced perspective on immunity as both a biological and social concept, offering listeners a thoughtful meditation on responsibility, trust, and the interconnectedness of health.