Louis Pasteur, the French chemist who lived in the 19th century, is famous for developing fundamental scientific concepts. He demonstrated the process of fermentation and debunked spontaneous generation, an erroneous belief that bacteria came from inanimate matter such as dust. Pasteur is also recognized for his work on vaccines; he was the first scientist to use live viruses in vaccinations. Pasteur’s work in infectious diseases was momentous for the development of the rabies and anthrax vaccines specifically. Rabies and anthrax are animal-born diseases that cause serious symptoms in humans.
