The intention of this article is to examine the significant and lasting impact that Louis Pasteur had on public health and the wonderful advances in medicine and the invention of vaccines. Louis Pasteur was a truly talented person who made many diverse discoveries in different scientific fields. He invented pasteurization, the process of treating milk free of harm-causing microorganisms (Louis Pasteur, 2014). In 1843, Louis enrolled at the Ecole Normale Supérieure in Paris, where he focused on the origins of life. While a professor in Strasbourg, France, he began studying fermentation, a chemical process that breaks down organic substances. Pasteur was interested in the field of communicable diseases and the discovery of a vaccine against avian cholera which can be considered the birth of immunology (Berche, 2012). In 1854, he became a professor of chemistry and was elected a member of the French Academy of Medicine (J Neurol Neurosurg Psychiatry 2002). In 1856, Pasteur was chosen as administrator of scientific studies at the École Normale Supérieure. Pasteur has written several books and magazines (Thefamouspeople.com.2014). In 1895, Pasteur studied rabies in 1882, a communicable disease transmitted through the bite of rabies-infected animals, and spent many hours in his laboratory researching a vaccine to prevent rabies (HowstuffWorks.com .2009).Louis Pasteur ChildhoodLouis Pasteur was born in 1822 to Jean-Joseph Pasteur and Jeanne-Etiennette Roqui and the family lived in Dole, Jura, Franche-Comté, France (Berche, 2012). Louis' parents raised their family on values, loyalty, respect for hard work, and monetary security. His father served as a sergeant in Napoleon's army, and opened a tannery as he entered middle of paper ......of life at vaccination. Clinical microbiology and infections: official publication of the European Society of Clinical Microbiology and Infectious Diseases http://dx.doi.org/10.1111/j.1469-0691.2012.03945.x Hicks, D., Fooks, A. and Johnson , N. (2012). Developments in rabies vaccines. Clinical and Experimental Immunology http://doi:10.1111/j.1365-2249.2012.04592.x HowstuffWorks.com. (2009). Louis Pasteur. Retrieved from http://science.howstuffworks.com/dictionary/famous-scientists/chemists/louis-Pasteur-info.htmJ Neurol Neurosurg Psychiatry (2002). Louis Pasteur and rage: a brief note http://www.jnnp.bmj.com/content/73/1/82.full.html#ref-list-1 Thefamouspeople.com. (2014). Louis Pasteur. Retrieved from http://www.thefamouspeople.com/profiles/louis-Pasteur-145.php.