Part 7/9:
Yet, not all animal interactions have resulted in doom. The discovery of vaccines, largely inspired by observations of animals, transformed public health. Edward Jenner's groundbreaking work in the late 18th century used cowpox to inoculate against smallpox, paving the way for modern immunology. Further scientific discoveries by pioneers like Louis Pasteur cemented the connection between animals and human health, showing a symbiotic relationship where disease and remedy stem from the same origins.