On Immunity: An Inoculation is a non-fiction book by Eula Biss, exploring the cultural and historical aspects of vaccination and the science behind it. Biss draws on her own experiences as a new mother and her conversations with doctors, scientists, and other parents to explore the reasons behind the current anti-vaccination movement. She also delves into the history of vaccination, tracing its origins back to the smallpox vaccine in the 18th century and its evolution over time. Through her exploration, Biss ultimately argues that vaccines are not only safe and effective, but also an essential tool for protecting both individuals and communities. The book is a thought-provoking and timely exploration of the intersection between science, culture, and politics in the ongoing debate over vaccination.