In addition, their procedures were far from being traditional and even from ethical and moral codes, since the discovery of the smallpox vaccine in 1796 was possible because it injected pus from sick cows into the blood of a child to see if it would become immune again. And thanks to this, we now have vaccines. Sigmund Freud was an Austrian doctor specializing in neurology and considered not only as the father of psychoanalysis, but as one of the most important intellectual figures of the 20th century. It changed the world of psychology and psychiatry forever by revealing to the world that the unconscious played a very important role in the development of our personality and even in pathologies.
Avicenna made countless contributions to philosophy, astronomy, mathematics, geology, theology, psychology and, obviously, to Medicine. Of the 450 works he wrote, about 40 are medical in nature and contributed greatly to the progress of this discipline around the world. John Snow was an English doctor considered to be the father of modern epidemiology. He went down in history when he discovered that the cholera outbreaks that appeared in London in 1854 were due to the contamination of the city's water with faecal matter.
In this sense, John Snow was the one who laid the foundations for the promotion of public health. Download the PDF of the previous year's question document from JCECE with the solution Free and Unlimited 3D Learning %26 Practice with solutions for every question in NEET.