"A Shot in the Arm!, book 3 in the Big Ideas that Changed the World series, is the history of vaccinations and the struggle to protect people from infectious disease. Beginning with smallpox-perhaps humankind's greatest affliction to date-and concluding with an overview of the COVID-19 pandemic, Brown traces the evolution of vaccines and examines deadly diseases such as measles, polio, anthrax, rabies, cholera, and influenza. The book is narrated...