The father of clinical epidemiology: Pierre Charles Alexandre Louis

Pierre Charles Alexandre Louis(1787-1872),a French doctor in nineteenth century, is an important figure in the history of medicine,he pioneered the use of simple observation and statistical analysis to research tuberculosis, typhoid fever and pneumonia. He applied the numerical method to medicine, and established clinical epidemiology.Louis, a clinician and pathologist, has been remembered as a famous clinical epidemiology pioneer by people.