Rabies, the disease he chose, had long terrified the populace, even though it was in fact quite rare in humans. He overheard a milkmaid say she would never have to suffer from smallpox because she had already contracted cowpox, a weakened version of smallpox that affected cows.26 This gave Jenner an idea of injecting a perfectly healthy human with cowpox to see if it indeed protected a person from smallpox. Realizing he had discovered a technique that could be extended to other diseases, Pasteur returned to his study of anthrax. We hope you are enjoying Biologywise! After he studied Bacillus anthracis, a bacterium that caused the disease known as anthrax, he devised an experiment that dealt with the infectivity of Bacillus anthracis.7 He began by isolating the bacterium in a culture and proceed to experiment with it in mice. The papers submitted by Louis Pasteur and Robert Koch regarding their observations and therapeutic suggestion with respect to anthrax, constitute the first formal representations of the germ theory of diseases. This experiment silenced all the debates between germ theory and spontaneous generation theory of origin of life. The Germ Theory of Disease . It is interesting to learn about how before the germ theory was created, the people believed that illness was caused by “bad air.” What struck me was how he had looked into silkworm disease and found that there were two different germs. He reduced mortality from puerperal fever and created the first vaccines for rabies and anthrax. This also gave scientists an insight into what was really happening at the microscopic level of a wound that had been infected. The effects of the vaccine were undeniable: the vaccinated animals were all alive. An example for this theory would have been that if you put a sweaty shirt and wheat in a container, in twenty-one days mice would be created. Figuring prominently in early rounds of these debates were various applications of his pasteurization process, which he originally invented and patented (in 1865) to fight the “diseases” of wine. A Student Organization of St. Mary's University of San Antonio Texas, College of Arts, Humanities, and Social Sciences, St. Mary's University, Department of History, St. Mary's University, Department of Political Science, St. Mary's University, Center for Catholic Studies, St. Mary's University, The Learning Assistance Center, St. Mary's University, Louis J. Blume Library Services, St. Mary's University, STRIVE Career Center, St. Mary's University, Academic Technology Services, St. Mary's University, The Nika Riots: A Day at the Races Turned Deadly, US-Colonization and Settlement (1585-1763), US-Revolution and the New Nation (1754-1820s), US-Civil War & Reconstruction (1850-1877), Jackie Robinson: An Unexpected Hero of Business and Civil Rights, Gun Violence in America: The Sandy Hook Story, Bad Boys vs. Archangels - Adapting and Overcoming the 'Jordan Rules', "You have the right to an attorney..." or Not, Quiet Man On the Run: The Story of Frank Abagnale, World-Renound Con-Artist, Code Breakers Ride the Wave to the Midway, The People vs. Angela Davis: The Black Intellect on Trial. After the growth, Koch repeated the experiment and extracted the bacterium from the newly grown culture.