Discovery of tuberculosis in 1702.In 1890, he announced the discovery of tuberculin.
Robert Koch and Tuberculosis
Koch's Famous Lecture
Robert Koch, Nobel Laureate, 1905.
The medal given to Nobel Laureates in Physiology or Medicine.
Robert Koch, a German physician and scientist, presented his discovery of Mycobacterium tuberculosis, the bacterium that causes tuberculosis (TB), on the evening of March 24, 1882. He began by reminding the audience of terrifying statistics: "If the importance of a disease for mankind is measured by the number of fatalities it causes, then tuberculosis must be considered much more important than those most feared infectious diseases, plague, cholera and the like. One in seven of all human beings dies from tuberculosis. If one only considers the productive middle-age groups, tuberculosis carries away one-third, and often more."
Koch's lecture, considered by many to be the most important in medical history, was so innovative, inspirational and thorough that it set the stage for the scientific procedures of the twentieth century. He described how he had invented a new staining method and demonstrated it for the audience. Koch brought his entire laboratory to the lecture room: microscopes, test tubes with cultures, glass slides with stained bacteria, dyes, reagents, glass jars with tissue samples, etc. He wanted the audience to check his findings for themselves. Koch showed tissue dissections from guinea pigs which were infected with tuberculous material from the lungs of infected apes, from the brains and lungs of humans who had died from blood-borne tuberculosis, from the cheesy masses in lungs of chronically infected patients and from the abdominal cavities of cattle infected with TB. In all cases, the disease which had developed in the experimentally infected guinea pigs was the same, and the cultures of bacteria taken from the infected guinea pigs were identical. One important scientist in the audience was Paul Ehrlich (Nobel Laureate in Physiology or Medicine in 1908) who later confessed, "I hold that evening to be the most important experience of my scientific life." When Koch ended his lecture there was complete silence. No questions, no congratulations, no applause. The audience was stunned. Slowly people got up and started looking into the microscopes to see the TB bacteria with their own eyes.
News of Koch's discovery spread rapidly. The results were published in a German medical journal on April 10, in England after a rapid translation in The Times on April 22, and in the US in The New York Times on May 3, 1882. Robert Koch was now a famous scientist and became known as "The Father of Bacteriology." He was presented with the Nobel Prize in Physiology or Medicine in 1905 "for his investigations and discoveries in relation to tuberculosis."
2007-05-19 07:16:07
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answer #1
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answered by Dr.Qutub 7
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Tuberculosis was not identified as a single disease until the 1820s , see below articles.
Although it was established that the pulmonary form was associated with 'tubercles' by Dr Richard Morton in 1689, due to the variety of its symptoms, TB was not identified as a single disease until the 1820s and was not named 'tuberculosis' until 1839 by J. L. Schönlein. The first TB sanatorium opened in 1859 in Görbersdorf, Germany.
Dr. Robert Koch discovered the tuberculosis bacilli.The bacillus causing tuberculosis, Mycobacterium tuberculosis, was identified and described on March 24, 1882 by Robert Koch. He received the Nobel Prize in physiology or medicine in 1905 for this discovery.Koch did not believe that bovine (cattle) and human tuberculosis were similar, which delayed the recognition of infected milk as a source of infection. Later, this source was eliminated by the pasteurization process. Koch announced a glycerine extract of the tubercle bacilli as a "remedy" for tuberculosis in 1890, calling it 'tuberculin'. It was not effective, but was later adapted as a test for pre-symptomatic tuberculosis.
Tuberculosis (TB), contagious, wasting disease caused by any of several mycobacteria. The most common form of the disease is tuberculosis of the lungs (pulmonary consumption, or phthisis), but the intestines, bones and joints, the skin, and the genitourinary, lymphatic, and nervous systems may also be affected.
There are three major types of tubercle bacilli that affect humans. The human type (Mycobacterium tuberculosis), first identified in 1882 by Robert Koch, is spread by people themselves. It is the most common one. The bovine type (M. bovis) is spread by infected cattle but is no longer a threat in areas where pasteurization of milk and the health of cattle are strictly supervised. The avian type (M. avis) is carried by infected birds but can occur in humans. The tubercle bacillus can live for a considerable period of time in air or dust. The most common means of acquiring the disease is by inhalation of respiratory droplets.
2007-05-19 14:04:06
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answer #2
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answered by Anonymous
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Tuberculosis has been present in humans since antiquity. The earliest unambiguous detection of Mycobacterium tuberculosis is in the remains of bison dated 17,000 years before the present.[49] However, whether tuberculosis originated in cattle and then transferred to humans, or diverged from a common ancestor, is currently unclear.[50] Skeletal remains show prehistoric humans (4000 BC) had TB, and tubercular decay has been found in the spines of mummies from 3000-2400 BC
2007-05-19 14:03:16
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answer #3
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answered by Edd e 7
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early 1700s
2007-05-19 13:27:30
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answer #4
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answered by Anonymous
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back in the early 1700's
2007-05-19 13:25:42
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answer #5
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answered by amelia_0405 5
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