Since 1796, vaccines have helped humans combat smallpox, the flu, and other infectious diseases. The process of vaccine development has changed drastically since then, and is now front and center in the wake of COVID-19. In the first episode of our series on vaccines, join us as we talk with Dr. Sarah Gould about the history of vaccines and infectious disease.    Acknowledgements: Hosted by: Chris Garcia Narrated by: Gina Mullane  Special thanks to:  Dr. Sarah Gould