One of the most important theories in the history of medicine developed by Louis Pasteur - the Germ Theory of Infectious Diseases - was proposed by him. The theory that most of these diseases are caused by germs. The chemist has studied and identified numerous microbes responsible for various infectious diseases and has even developed various methods and techniques to combat them infectious agents.
Cancer is not an infectious disease. It is the name given to a group of over 100 diseases that have in common the disordered growth of cells that invade tissues and organs. Although some oncogenic viruses, that is, capable of producing cancer, can be transmitted through sexual contact, blood transfusions or contaminated syringes used, for example, to inject drugs.
