Vaccines have been instrumental in our modern view of health and healthcare. But they haven't always been around and there's been more than some misinformation on what they are and how they work. So how did we even discover vaccines in the first place? It started with a disease that had plagued humanity for so long, it seemed like it was just a natural part of living. But thanks to the work of Edward Jenner, soon smallpox would become a disease known only to history. One of two diseases that humanity had managed to completely eradicate and all thanks to vaccines and vaccination.