Jenner, Edward

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{{epname|Jenner, Edward}}
 
'''{{Infobox Scientist
 
'''{{Infobox Scientist
 
| name              = Edward Jenner
 
| name              = Edward Jenner
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| birth_date        = May 17, 1749
 
| birth_date        = May 17, 1749
 
| birth_place      = [[Berkeley, Gloucestershire]]
 
| birth_place      = [[Berkeley, Gloucestershire]]
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| death_date        = {{death date and age|1823|1|26|1749|5|17|df=y}}
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| death_date        = January 26, 1823
 
| death_place      = [[Berkeley, Gloucestershire]]
 
| death_place      = [[Berkeley, Gloucestershire]]
 
| residence        =  Berkeley, Gloucestershire
 
| residence        =  Berkeley, Gloucestershire
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| prizes            =
 
| prizes            =
 
| religion          =
 
| religion          =
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| footnotes        = Edward Jenner is mostly know for descovering the first vaccine- smallpox
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| footnotes        = Edward Jenner is mostly known for developing an effective vaccine for smallpox.
 
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}}
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'''Edward B. Jenner''' (May 17, 1749 – January 26, 1823) was an English physician and scientist who is most recognized for introducing and popularizing an effective and relatively safe means of [[vaccination]] against [[smallpox]], a discovery that proved to be one of the most significant medical advances of all time.
  
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'''Edward B. Jenner''', [[Fellow of the Royal Society|FRS]], (17 May 1749 – 26 January 1823) was an English scientist who studied his natural surroundings in [[Berkeley, Gloucestershire|Berkeley]], [[Gloucestershire]], England. He is often credited as the first doctor to introduce and study the [[smallpox vaccine]].
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Although [[inoculations]] using dried smallpox secretions had been known for centuries in [[China]] and had spread to the [[Ottoman Empire]] and then [[England]] before Jenner’s time, his [[vaccine]] utilizing material from a [[cowpox]] lesion was safer, more effective, and without the risk of smallpox transmission. Vaccination to prevent smallpox was soon practiced all over the world.  Eventually, a disease that had killed many hundreds of millions, and disfigured and blinded countless more, was completely eradicated. It is the only infectious disease in humans that has been completely eradicated.
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Jenner also coined the term immunization, which in its original meaning specifically referred to the protection conferred against smallpox using material from cowpox virus. Jenner called the material used for inoculation "vaccine," from the root word ''vacca,'' which is Latin for [[cow]].
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Jenner also was a naturalist, who studied his natural surroundings in [[Berkeley, Gloucestershire|Berkeley]], [[Gloucestershire]], in rural England; was a horticulturist; and discovered the [[fossil]]s of a [[plesiosaur]]. He became a Fellow of the Royal Society based on his study of the nesting habits of the [[cuckoo]].
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{{toc}}
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Although Jenner was not the first to discover the practice of inoculation, and even the use of cowpox as vaccine predated him, his leadership and intellectual qualities lead to systematically developing, testing, and popularizing this method that saved countless lives. Ironically, the first experiment he performed, on a young boy, would be considered unethical by current standards, but lead to major benefit for humanity.
  
 
== Early life ==
 
== Early life ==
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Jenner trained in [[Chipping Sodbury]], Gloucestershire as an apprentice to [[John Ludlow (physician)|John Ludlow]], a surgeon, for eight years from the age of 13<!-- Brittanica and others —>. In 1770, Jenner went up to London to study surgery and anatomy under the [[surgery|surgeon]] [[John Hunter (surgeon)|John Hunter]] and others at [[St George's, University of London]].  Hunter was the preeminent medical teacher in Britain (Last 2002), a noted experimentalist, and later a fellow of the [[Royal Society]].
  
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Jenner trained in [[Chipping Sodbury]], Gloucestershire as an apprentice to [[John Ludlow (physician)|John Ludlow]], a surgeon, for eight years from the age of 13<!-- Brittanica and others —>. In 1770 Jenner went up to London to study surgery and anatomy under the [[surgery|surgeon]] [[John Hunter (surgeon)|John Hunter]] and others at [[St George's, University of London]].  Hunter was a noted experimentalist, and later a fellow of the [[Royal Society]].
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[[William Osler]] records <!-- lectures at Yale in 1913 - Bartlett free bookshelf on Web —> that Jenner was a student to whom Hunter repeated [[William Harvey]]'s advice, very famous in medical circles (and characteristically Enlightenment), "Don't think, try." Jenner, therefore, was noticed early by men famous for advancing the practice and institutions of medicine. Hunter remained in correspondence with him over natural history and proposed him for the Royal Society.  Returning to his native countryside by 1773, he became a successful [[general practitioner]] and surgeon, practicing in purpose-built premises at Berkeley.  
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[[William Osler]] records <!-- lectures at Yale in 1913 - Bartlett free bookshelf on Web —> that Jenner was a student to whom Hunter repeated [[William Harvey]]'s advice, very famous in medical circles (and characteristically Enlightenment), "Don't think, try". Jenner therefore was early noticed by men famous for advancing the practice and institutions of medicine. Hunter remained in correspondence with him over natural history and proposed him for the Royal Society.  Returning to his native countryside by 1773 he became a successful [[general practitioner]] and surgeon, practicing in purpose-built premises at Berkeley.
 
  
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Jenner and others formed a medical society in Rodborough, Gloucestershire, meeting to read papers on medical subjects and dine together. Jenner contributed papers on [[angina pectoris]], [[ophthalmia]] and valvular disease of the heart and commented on [[cowpox]]. He also belonged to a similar society which met in Alveston, near Bristol.<ref name="JennerArchivesRCP">{{cite web |url= http://www.aim25.ac.uk/cgi-bin/search2?coll_id=7135&inst_id=8 |title= JENNER, Edward (1749-1823) |author= [[Royal College of Physicians]] |work= AIM25 Archives |quote= }}</ref>
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Jenner and others formed a medical society in Rodborough, Gloucestershire, meeting to read papers on medical subjects and dine together. Jenner contributed papers on [[angina pectoris]], [[ophthalmia]], and valvular disease of the heart and commented on [[cowpox]]. He also belonged to a similar society which met in Alveston, near Bristol (RCP).
  
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He was elected Fellow of the [[Royal Society]] in 1788<!-- the Roy Soc says 1789, RCS say 1788 and married afterward, that year —>, following a careful study combining observation, experiment and dissection into a description of the previously misunderstood life of the [[Common Cuckoo|cuckoo]] in the nest.
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He was elected Fellow of the [[Royal Society]] in 1788<!-- the Roy Soc says 1789, RCS say 1788 and married afterward, that year —>, following a careful study combining observation, experiment, and dissection into a description of the previously misunderstood life of the [[Common Cuckoo|cuckoo]] in the nest.
  
 
[[Image:Cuculus canorus.jpg|thumb|left|Common Cuckoo]]
 
[[Image:Cuculus canorus.jpg|thumb|left|Common Cuckoo]]
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Jenner's description of the newly-hatched cuckoo pushing it's host's eggs and fledglings from the nest was confirmed in the 20th century<ref name="JennerMuseumNestingHabits">{{cite web |url= http://www.jennermuseum.com/ej/cuckoo.shtml |title= Edward Jenner and the Cuckoo |author= The Jenner Museum }}</ref>  when photography became feasible.  Having observed the behaviour, he demonstrated an anatomical adaptation for it&mdash;the baby cuckoo has a depression in its back which is not present after 12 days of life, in which it cups eggs and other chicks to push them out of the nest.  It had been assumed that the adult bird did this but the adult does not remain in the area for sufficiently long. His findings were published in the Philosophical Transactions of the Royal Society in 1787.
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Jenner's description of the newly-hatched cuckoo pushing it's host's eggs and fledglings from the nest was confirmed in the twentieth century (JM) when photography became feasible.  Having observed the behavior, he demonstrated an anatomical adaptation for it&mdash;the baby cuckoo has a depression in its back that is not present after 12 days of life, in which it cups eggs and other chicks to push them out of the nest.  It had been assumed that the adult bird did this but the adult does not remain in the area for sufficiently long. His findings were published in the ''Philosophical Transactions of the Royal Society'' in 1787.
  
 
He married Catherine Kingscote (died 1815 from [[tuberculosis]]) in March 1788 having met her when [[balloon (aircraft)|balloons]] were hot science, and he and other Fellows were experimenting with them.  His trial balloon descended into Kingscote Park, owned by Anthony Kingscote, Catherine being one of his three daughters.
 
He married Catherine Kingscote (died 1815 from [[tuberculosis]]) in March 1788 having met her when [[balloon (aircraft)|balloons]] were hot science, and he and other Fellows were experimenting with them.  His trial balloon descended into Kingscote Park, owned by Anthony Kingscote, Catherine being one of his three daughters.
  
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In 1792, he obtained his [[Doctor of Medicine|M.D.]] from the [[University of St Andrews]].
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Jenner did not take any examinations to receive his medical degree, but purchased a medical degree in 1792, from a Scottish University, the University of St. Andrews, and subsequently would apply for a degree from Oxford University, which he was granted (Last 2002).  
  
 
== Smallpox ==
 
== Smallpox ==
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Smallpox at one time was a very deadly [[disease]], that is estimated to have killed 400,000 Europeans each year during the 18th century (including five reigning [[monarch]]s), and was responsible for a third of all blindness (Behbehani 1983). Between 20 to 60 percent of all those infected&mdash;and over 80 percent of infected children&mdash;died from the disease (Riedel 2005). During the twentieth century, it is estimated that smallpox was responsible for 300 to 500 million deaths (Koplow 2003).
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A method of inoculating against smallpox was known from Asia centuries before Jenner. Basically, when the human immune system is exposed to a disease once, it can develop the ability to quickly respond to a subsequent infection. Therefore, by exposing an individual to an immunogen in a controlled way, the person's body will then be able to protect itself from infection later on in life. One does not necessarily have to be exposed to the natural infection, but exposure to a similar agent can confer an increased resistance to the disease.
  
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Around this time [[smallpox]] was greatly feared, as one in three of those who contracted the disease died, and those who survived were often badly disfigured. [[Voltaire]], a few years later, recorded that 60.243% of people caught smallpox, with 20% of the population dying of it. In the years following 1770 there were at least six people in England and Germany (Sevel, Jensen, Jesty 1774, Rendall, Plett 1791) who had successfully tested the possibility of using the cowpox vaccine as an immunisation for smallpox in humans. <ref> Plett PC (2006)."[Peter Plett and other discoverers of cowpox vaccination before Edward Jenner]" (in German). Sudhoffs Arch 90 (2): 219–32. </ref> For example, [[Dorset]] farmer, [[Benjamin Jesty]], had successfully [[artificial induction of immunity|induced immunity]] in his wife and two children with cowpox during a smallpox epidemic in 1774, but it was not until Jenner's work some twenty years later that the procedure became widely understood. Indeed it is generally believed that Jenner was unaware of Jesty's success and arrived at his conclusions independently.{{Fact|date=September 2008}}
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Recognizing that an infectious disease, once overcome, did not normally reappear, people have tried to prevent getting a disease by purposely inoculating themselves with infected material. This is considered to have first been done successfully with smallpox before 200 B.C.E. (NMAH 2007), and having been practiced in [[India]] as early as 1000 B.C.E. (Bourzac 2002). However, this idea of such an early treatment has been challenged and the earliest confirmed inoculations are from China around 1000 C.E. (Last 2002), and were widely practiced during the [[Ming Dynasty]] (Temple 1986).
  
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In 1796, [[Edward Jenner]] (1749-1823) inoculated against smallpox using [[cowpox]] (a mild relative of the deadly smallpox virus). While Edward Jenner has been recognized as the first doctor to give sophisticated immunization, it was British dairy farmer Benjamin Jestey who noticed that "milkmaids" did not become infected with [[smallpox]], or displayed a milder form. Jestey took the pus from an infected [[cow]]'s udder and inoculated his wife and children with cowpox, in order to artificially induce immunity to smallpox during the [[epidemic]] of 1774, thereby making them immune to smallpox. Twenty-two years later, by injecting a human with the cowpox virus (which was harmless to humans), Jenner swiftly found that the immunized human was then also immune to smallpox. The process spread quickly, and the use of cowpox immunization and later the vaccinia virus (of the same family as the cowpox virus and the smallpox virus or ''Variola'') led to the almost total eradication of smallpox in modern human society. After successful vaccination campaigns throughout the nineteenth and twentieth centuries, the World Health Organization (WHO) certified the eradication of smallpox in 1979.
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These early inoculations involved the process of variolation, involving either nasal insufflation of powdered smallpox scabs, or scratching material from a smallpox lesion into the skin. However, because the person was actually infected with the virus, a severe infection could result, and the person could transmit smallpox to others. However, the mortality rate was much less than the contracting the disease itself.
  
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Vaccination to prevent smallpox was soon practiced all over the world. During the 19th century, the cowpox virus used for smallpox vaccination was replaced by vaccinia virus. Vaccinia is in the same family as cowpox and variola but is genetically distinct from both.
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From China, this practice of variolation spread along the silk route, reaching Asia Minor sometime in the seventeenth century. In 1718, Lady Mary Wortley Montague, wife of the British ambassador to the Ottoman Empire, reported that the Turks have a habit of deliberately inoculating themselves with fluid taken from mild cases of smallpox and she inoculated her own children (Behbehani 1983). She imported this idea to England when she returned home, and many educated English families used this method to offer some protection against smallpox (Last 2002). Jenner himself was inoculated at a young age (Gross and Sepkowitz 1998).
  
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Around the time of Jenner, [[smallpox]] was greatly feared, as one in three of those who contracted the disease died, and those who survived were often badly disfigured. [[Voltaire]] recorded that 60.243 percent of people caught smallpox, with 20 percent of the population dying of it.
  
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It was noticed by many that people who had been infected with cowpox, a milder relative of the smallpox virus, did not get smallpox. After 1770, there were at least several people in England and Germany (Sevel, Jensen, Jesty 1774, Rendall, Plett 1791) who had successfully tested the possibility of using the cowpox vaccine as an immunization for smallpox in humans (Plett 2006).
  
 
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<td>'''Jenner's Initial Theory'''</td></tr>
 
<td>'''Jenner's Initial Theory'''</td></tr>
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<tr><td>In fact he thought the initial source of infection was a disease of horses, called "the grease", and that this was transferred to cows by farmworkers, transformed, and then manifested as cowpox.  From that point on he was correct, the complication probably arose from coincidence.
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<tr><td>In fact, Jenner thought the initial source of infection was a disease of horses, called "the grease," and that this was transferred to cows by farm workers, transformed, and then manifested as cowpox.  From that point on he was correct, the complication probably arose from coincidence.
 
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In 1774, during a smallpox epidemic, [[Dorset]] farmer, [[Benjamin Jesty]] had successfully [[artificial induction of immunity|induced immunity]] in his wife and two children with cowpox. There was a popular belief that people infected and recovered from cowpox did not get smallpox, and Jesty noticed that "milkmaids" did not become infected with [[smallpox]], or displayed a milder form. Jestey took the pus from an infected [[cow]]'s udder and inoculated his wife and children with cowpox.
  
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Noting the common observation that milkmaids did not generally get smallpox, Jenner theorized that the pus in the blisters which milkmaids received from [[cowpox]] (a disease similar to smallpox, but much less virulent) protected the milkmaids from smallpox. He may have had the advantage of hearing stories of [[Benjamin Jesty]] and perhaps others deliberately arranging cowpox infection of their families and of a reduced risk in those families.
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It is not known whether Jenner had the advantage of hearing stories of Jesty and perhaps others deliberately arranging cowpox infection of their families and of a reduced risk in those families. However, noting the common observation that milkmaids did not generally get smallpox, Jenner theorized that the pus in the blisters that milkmaids received from [[cowpox]] protected the milkmaids from smallpox.  
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On 14 May 1796, Jenner tested his theory by inoculating [[James Phipps]], a young boy of 8 years old, with material from the cowpox blisters of the hand of Sarah Nelmes, a milkmaid who had caught cowpox from a cow called Blossom<ref>, http://www.jennermuseum.com/sv/smallpox2.shtml Edward Jenner Museum<!-- Bot generated title —>]</ref>, whose hide hangs on the wall of the library at St George's medical school (now in Tooting), in commemoration of one of the school's most renowned alumni. Phipps was the 17th case described in Jenner's first paper on vaccination.
 
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Jenner inoculated Phipps with cowpox pus in both arms on one day, by scraping the pus from Nelmes' blisters onto a piece of wood then transferring this to Phipps' arms. This produced a fever and some uneasiness but no great illness. Later, he injected Phipps with [[variolation|variolous material]], which would have been the routine attempt to produce immunity at that time. No disease followed. Jenner reported that later the boy was again challenged with variolacious material and again showed no sign of infection.
 
  
 
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On 14 May 1796, Jenner tested his theory by inoculating [[James Phipps]], a young boy of 8 years old, with material from the cowpox blisters of the hand of Sarah Nelmes, a milkmaid who had caught cowpox from a cow called Blossom (JM). Blossom's hide now hangs on the wall of the library at St George's medical school (now in Tooting), in commemoration of one of the school's most renowned alumni. Phipps was the 17th case described in Jenner's first paper on vaccination.
  
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He continued his research and reported it to the Royal Society, who did not publish the initial report. After improvement and further work, he published a report of twenty-three cases. Some of his conclusions were correct, and some erroneous—modern microbiological and microscopic methods would make this easier to repeat. The medical establishment, as cautious then as now, considered his findings for some time before accepting them. Eventually vaccination was accepted, and in 1840 the British government banned variolation and provided vaccination free of charge. (See [[Vaccination/Vaccination acts|Vaccination acts]])
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Jenner inoculated Phipps with cowpox pus in both arms on one day, by scraping the pus from Nelmes' blisters onto a piece of wood then transferring this to Phipps' arms. This produced a fever and some uneasiness but no great illness. Later, he injected Phipps with [[variolation|variolous material]], which would have been the routine attempt to produce immunity at that time. No disease followed. Jenner reported that later the boy was again challenged with variolacious material and again showed no sign of infection.
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He continued his research and reported it to the Royal Society, who did not publish the initial report. After improvement and further work, he published a report of twenty-three cases, mostof theim children that he had inoculated, all of whom survived unharmed and did not get smallpox. Some of Jenner's conclusions were correct, and some erroneous. The medical establishment, as cautious then as now, considered his findings for some time before accepting them. Eventually vaccination was accepted, and in 1840, the British government banned variolation and provided vaccination free of charge.  
  
 
[[Image:The cow pock.jpg|thumb|300px|1802 caricature of Jenner vaccinating patients who feared it would make them sprout cowlike appendages.]]
 
[[Image:The cow pock.jpg|thumb|300px|1802 caricature of Jenner vaccinating patients who feared it would make them sprout cowlike appendages.]]
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Jenner's continuing work on vaccination prevented his continuing his ordinary medical practice. He was supported by his colleagues and the King in petitioning Parliament and was granted £10,000 for his work on vaccination. In 1806 he was granted another £20,000 for his continuing work.
 
  
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In 1803 in London he became involved with the '''Jennerian Institution''', a society concerned with promoting vaccination to eradicate [[smallpox]]. In 1808, with government aid, this society became the National Vaccine Establishment. Jenner became a member of the Medical and Chirurgical Society on its foundation in 1805, and subsequently presented to them a number of papers. This is now the [[Royal Society of Medicine]].
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==Later life==
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Jenner's continuing work on vaccination prevented his continuing his ordinary medical practice. He was supported by his colleagues and the King in petitioning Parliament and was granted £10,000 for his work on vaccination. In 1806, he was granted another £20,000 for his continuing work.
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In 1803, in London, he became involved with the '''Jennerian Institution,''' a society concerned with promoting vaccination to eradicate [[smallpox]]. In 1808, with government aid, this society became the National Vaccine Establishment. Jenner became a member of the Medical and Chirurgical Society on its foundation in 1805, and subsequently presented to them a number of papers. This is now the [[Royal Society of Medicine]].
  
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Returning to London in 1811 he observed a significant number of cases of smallpox after vaccination occurring. He found that in these cases the severity of the illness was notably diminished by the previous vaccination. In 1821 he was appointed Physician Extraordinary to [[King George IV]], a considerable national honour, and was made Mayor of Berkeley and Justice of the Peace. He continued his interests in natural history. In 1823, the last year of his life, he presented his ''Observations on the Migration of Birds'' to the Royal Society.
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Returning to London in 1811, Jenner observed a significant number of cases of smallpox after vaccination occurring. He found that in these cases the severity of the illness was notably diminished by the previous vaccination. In 1821, he was appointed Physician Extraordinary to [[King George IV]], a considerable national honor, and was made Mayor of Berkeley and Justice of the Peace. He continued his interests in natural history. In 1823, the last year of his life, he presented his ''Observations on the Migration of Birds'' to the Royal Society.
  
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He was found in a state of [[apoplexy]] on 25 January 1823, with his right side paralysed. He never rallied, and died of what was apparently a stroke (he had suffered a previous stroke) on 26 January 1823, aged 73. He was survived by one son and one daughter, his elder son having died of tuberculosis at the age of 21.
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He was found in a state of [[apoplexy]] on 25 January 1823, with his right side paralyzed. He never rallied, and died of what was apparently a stroke (he had suffered a previous stroke) on January 26, 1823 at the age of 73. He was survived by one son and one daughter, his elder son having died of [[tuberculosis]] at the age of 21.
  
 
== Legacy ==
 
== Legacy ==
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In 1980, the [[World Health Organization]] declared smallpox an eradicated disease. This was the result of coordinated public health efforts by many people, but vaccination was an essential component.  Although it was ''declared'' eradicated, some samples still remain in laboratories in [[Centers for Disease Control and Prevention]] (CDC) in [[Atlanta, Georgia]] in the United States, and [[State Research Center of Virology and Biotechnology VECTOR]] in [[Koltsovo, Novosibirsk Oblast]], Russia.
 
In 1980, the [[World Health Organization]] declared smallpox an eradicated disease. This was the result of coordinated public health efforts by many people, but vaccination was an essential component.  Although it was ''declared'' eradicated, some samples still remain in laboratories in [[Centers for Disease Control and Prevention]] (CDC) in [[Atlanta, Georgia]] in the United States, and [[State Research Center of Virology and Biotechnology VECTOR]] in [[Koltsovo, Novosibirsk Oblast]], Russia.
  
 
== Monuments ==
 
== Monuments ==
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[[Image:Jenner-statue-by-lachlan-mvc-006f.jpg|thumb|right|Bronze in Kensington Gardens]]
 
[[Image:Jenner-statue-by-lachlan-mvc-006f.jpg|thumb|right|Bronze in Kensington Gardens]]
  
 
* Jenner's house is now a small museum housing among other things the horns of the cow, Blossom. It lies in the Gloucestershire village of [[Berkeley, Gloucestershire|Berkeley]].
 
* Jenner's house is now a small museum housing among other things the horns of the cow, Blossom. It lies in the Gloucestershire village of [[Berkeley, Gloucestershire|Berkeley]].
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* The word vaccination comes from the [[Latin]] '''vaccinia''', cowpox, from '''vacca''', cow.
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* Jenner was buried in the chancel of the parish church of Berkeley
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* Jenner was buried in the chancel of the parish church of Berkeley.
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* A statue, by [[Robert William Sievier]], was erected in the nave of [[Gloucester Cathedral]]
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* A statue, by [[Robert William Sievier]], was erected in the nave of [[Gloucester Cathedral]].
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* A statue was erected in [[Trafalgar Square]], later moved to [[Kensington Gardens]] (RCP)
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* A statue was erected in [[Trafalgar Square]], later moved to [[Kensington Gardens]].<ref name="JennerArchivesRCP"/>
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* A small grouping of villages in [[Somerset County, Pennsylvania]], United States, were named in honour of Jenner by early nineteenth century English settlers, including what are now the towns of Jenners, [[Jenner Township, Pennsylvania|Jenner Township]], Jenner Crossroads and [[Jennerstown, Pennsylvania]].
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* Near the small Gloucestershire village of [[Uley]], Downham Hill is locally known as 'Smallpox Hill', with a possible connection to Jenner's local work with the disease.{{Fact|date=April 2007}}
 
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* [[St George's, University of London]] has a wing named after him as well as a bust of him.<ref name="StGeorgesHistory">{{cite web |url= http://www.stgeorges.nhs.uk/aboutourhistory.asp |title= Our History |author= [[St George's, University of London]] }}</ref>
 
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* A small grouping of villages in [[Somerset County, Pennsylvania]], United States, were named in honour of Jenner by early 19th century English settlers, including what are now the towns of Jenners, [[Jenner Township, Pennsylvania|Jenner Township]], Jenner Crossroads and [[Jennerstown, Pennsylvania]].
 
  
 
== Publications ==
 
== Publications ==
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* 1798 ''An Inquiry Into the Causes and Effects of the Variolæ Vaccinæ''
 
* 1798 ''An Inquiry Into the Causes and Effects of the Variolæ Vaccinæ''
 
* 1799 ''Further Observations on the Variolœ Vaccinœ''
 
* 1799 ''Further Observations on the Variolœ Vaccinœ''
 
* 1800  ''A Continuation of Facts and Observations relative to the Variolœ Vaccinœ'' 40pgs
 
* 1800  ''A Continuation of Facts and Observations relative to the Variolœ Vaccinœ'' 40pgs
 
* 1801  ''The Origin of the Vaccine Inoculation'' 12pgs
 
* 1801  ''The Origin of the Vaccine Inoculation'' 12pgs
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== See also ==
 
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{{commons|Edward Jenner}}
 
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* [[Vaccine]]
 
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* [[Vaccination]]
 
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* [[Inoculation]]
 
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* [[History of science]]
 
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== Footnotes ==
 
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{{reflist|2}}
 
  
 
== References ==
 
== References ==
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* Aly, A., and S. Aly. 1996. [http://www.ncbi.nlm.nih.gov/pubmed/8778626 Smallpox.] ''N. Engl. J. Med.'' 335(12): 900-901. PMID 8778626. Retrieved November 16, 2021.
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* Behbehani, A. M. 1983. The smallpox story: Life and death of an old disease. ''Microbiol Rev'' 47(4): 455-509. PMID 6319980.  
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* Andreae, H. 1973. [http://www.ncbi.nlm.nih.gov/pubmed/4269783 Edward Jenner, initiator of cowpox vaccination against human smallpox, died 150 years ago] (Article in German). ''Das Offentliche Gesundheitswesen'' 35(6): 366-7. PMID 4269783. Retrieved November 16, 2021.
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* Baron, J. 1827. ''The Life of Edward Jenner MD LLD FRS''. London: Henry Colburn.
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* Baxby, D. 1996. [http://www.ncbi.nlm.nih.gov/pubmed/8954347 The Jenner bicentenary: The introduction and early distribution of smallpox vaccine.] ''FEMS Immunol. Med. Microbiol.'' 16(1): 1-10. PMID 8954347. Retrieved November 16, 2021.
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* Baxby, D. 1996. [http://www.ncbi.nlm.nih.gov/pubmed/8666065 The Jenner bicentenary; still uses for smallpox vaccine.] ''Epidemiol. Infect'' 116(3): 231-234. PMID 8666065. Retrieved November 16, 2021.
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* Baxby, D. [http://www.ncbi.nlm.nih.gov/pubmed/10326082 Jenner and the control of smallpox.] ''Transactions of the Medical Society of London'' 113: 18-22. PMID 10326082. Retrieved November 16, 2021.
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| last=Wynder
 
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| first=E L
 
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| publication-date=1974 Mar
 
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| year=1974
 
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| title=A corner of history: Jenner and his smallpox vaccine.
 
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| volume=3
 
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| issue=1
 
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| periodical=Preventive medicine
 
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| pages=173-5
 
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* {{Citation
 
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| url= http://www.ncbi.nlm.nih.gov/pubmed/4269783
 
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| last=Andreae
 
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| first=H
 
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| publication-date=1973 Jun
 
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| year=1973
 
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| title=[Edward Jenner, initiator of cowpox vaccination against human smallpox, died 150 years ago]
 
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| volume=35
 
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| periodical=Das Offentliche Gesundheitswesen
 
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| publication-date=1973 Feb 11
 
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| title=[A cure for smallpox. On the 150th anniversary of Edward Jenner's death]
 
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| publication-date=1968 Jan
 
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| title=The prevention of smallpox: from Edward Jenner to Monckton Copeman.
 
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| url= http://www.ncbi.nlm.nih.gov/pubmed/4885910
 
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| last=Udovitskaia
 
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| publication-date=1966 Nov
 
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| year=1966
 
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| title=[Edward Jenner and the history of his scientific achievement. (On the 170th anniversary of the discovery of smallpox vaccination)]
 
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| publication-date=1964
 
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| title=[THE PHARMACY DISPLAY WINDOW. EDWARD JENNER DISCOVERED SMALLPOX VACCINATION.]
 
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== External links ==
 
−
 
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* [http://85.1911encyclopedia.org/J/JE/JENNER_EDWARD.htm "EDWARD JENNER." ''LoveToKnow 1911 Online Encyclopedia''. © 2003, 2004 LoveToKnow.]
 
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* Jenner's papers on vaccination: http://www.bartleby.com/38/4/
 
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* A [http://posner.library.cmu.edu/Posner/books/book.cgi?call=614.4_J54I_1798 digitized copy] of ''An inquiry into the causes and effects of the variolµ vaccinµ'' (1798), from the Posner Memorial Collection at [[Carnegie Mellon]]
 
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* The Jenner Museum: http://www.dursley-cotswolds-uk.com/Jenner%20museum.html
 
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* The Jenner Museum: http://www.jennermuseum.com
 
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* [ftp://ftp.mirrorservice.org/sites/ftp.ibiblio.org/pub/docs/books/gutenberg/etext98/teomm10.txt The Evolution of Modern Medicine. Osler, W]
 
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* [http://www.steamships.org/sdc/dr_edward_jenner.htm "The First Vaccination" Painting by Georges Gaston Melingue]
 
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{{Persondata
 
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| NAME=Jenner, Edward
 
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| ALTERNATIVE NAMES=
 
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| SHORT DESCRIPTION=English doctor, introduced and studied the smallpox vaccine
 
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| DATE OF BIRTH= 17 May 17 1749
 
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| PLACE OF BIRTH= [[Gloucestershire]]
 
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| DATE OF DEATH= 26 January 1823
 
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| PLACE OF DEATH=
 
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}}
 
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{{DEFAULTSORT:Jenner, Edward}}
 
  
 
[[Category:Life sciences]]
 
[[Category:Life sciences]]

Latest revision as of 19:51, 17 November 2021

Edward Jenner

Edward Jenner2.jpg
Edward in the prime of his studies
Born

May 17, 1749
Berkeley, Gloucestershire

Died January 26, 1823

Berkeley, Gloucestershire

Residence Berkeley, Gloucestershire
Nationality United Kingdom
Alma mater St George's, University of London
Academic advisor  John Hunter
Known for smallpox vaccine
Edward Jenner is mostly known for developing an effective vaccine for smallpox.

Edward B. Jenner (May 17, 1749 – January 26, 1823) was an English physician and scientist who is most recognized for introducing and popularizing an effective and relatively safe means of vaccination against smallpox, a discovery that proved to be one of the most significant medical advances of all time.

Although inoculations using dried smallpox secretions had been known for centuries in China and had spread to the Ottoman Empire and then England before Jenner’s time, his vaccine utilizing material from a cowpox lesion was safer, more effective, and without the risk of smallpox transmission. Vaccination to prevent smallpox was soon practiced all over the world. Eventually, a disease that had killed many hundreds of millions, and disfigured and blinded countless more, was completely eradicated. It is the only infectious disease in humans that has been completely eradicated.

Jenner also coined the term immunization, which in its original meaning specifically referred to the protection conferred against smallpox using material from cowpox virus. Jenner called the material used for inoculation "vaccine," from the root word vacca, which is Latin for cow.

Jenner also was a naturalist, who studied his natural surroundings in Berkeley, Gloucestershire, in rural England; was a horticulturist; and discovered the fossils of a plesiosaur. He became a Fellow of the Royal Society based on his study of the nesting habits of the cuckoo.

Although Jenner was not the first to discover the practice of inoculation, and even the use of cowpox as vaccine predated him, his leadership and intellectual qualities lead to systematically developing, testing, and popularizing this method that saved countless lives. Ironically, the first experiment he performed, on a young boy, would be considered unethical by current standards, but lead to major benefit for humanity.

Early life

Jenner trained in Chipping Sodbury, Gloucestershire as an apprentice to John Ludlow, a surgeon, for eight years from the age of 13. In 1770, Jenner went up to London to study surgery and anatomy under the surgeon John Hunter and others at St George's, University of London. Hunter was the preeminent medical teacher in Britain (Last 2002), a noted experimentalist, and later a fellow of the Royal Society.

William Osler records that Jenner was a student to whom Hunter repeated William Harvey's advice, very famous in medical circles (and characteristically Enlightenment), "Don't think, try." Jenner, therefore, was noticed early by men famous for advancing the practice and institutions of medicine. Hunter remained in correspondence with him over natural history and proposed him for the Royal Society. Returning to his native countryside by 1773, he became a successful general practitioner and surgeon, practicing in purpose-built premises at Berkeley.

Jenner and others formed a medical society in Rodborough, Gloucestershire, meeting to read papers on medical subjects and dine together. Jenner contributed papers on angina pectoris, ophthalmia, and valvular disease of the heart and commented on cowpox. He also belonged to a similar society which met in Alveston, near Bristol (RCP).

He was elected Fellow of the Royal Society in 1788, following a careful study combining observation, experiment, and dissection into a description of the previously misunderstood life of the cuckoo in the nest.

Common Cuckoo

Jenner's description of the newly-hatched cuckoo pushing it's host's eggs and fledglings from the nest was confirmed in the twentieth century (JM) when photography became feasible. Having observed the behavior, he demonstrated an anatomical adaptation for it—the baby cuckoo has a depression in its back that is not present after 12 days of life, in which it cups eggs and other chicks to push them out of the nest. It had been assumed that the adult bird did this but the adult does not remain in the area for sufficiently long. His findings were published in the Philosophical Transactions of the Royal Society in 1787.

He married Catherine Kingscote (died 1815 from tuberculosis) in March 1788 having met her when balloons were hot science, and he and other Fellows were experimenting with them. His trial balloon descended into Kingscote Park, owned by Anthony Kingscote, Catherine being one of his three daughters.

Jenner did not take any examinations to receive his medical degree, but purchased a medical degree in 1792, from a Scottish University, the University of St. Andrews, and subsequently would apply for a degree from Oxford University, which he was granted (Last 2002).

Smallpox

Smallpox at one time was a very deadly disease, that is estimated to have killed 400,000 Europeans each year during the 18th century (including five reigning monarchs), and was responsible for a third of all blindness (Behbehani 1983). Between 20 to 60 percent of all those infected—and over 80 percent of infected children—died from the disease (Riedel 2005). During the twentieth century, it is estimated that smallpox was responsible for 300 to 500 million deaths (Koplow 2003).

A method of inoculating against smallpox was known from Asia centuries before Jenner. Basically, when the human immune system is exposed to a disease once, it can develop the ability to quickly respond to a subsequent infection. Therefore, by exposing an individual to an immunogen in a controlled way, the person's body will then be able to protect itself from infection later on in life. One does not necessarily have to be exposed to the natural infection, but exposure to a similar agent can confer an increased resistance to the disease.

Recognizing that an infectious disease, once overcome, did not normally reappear, people have tried to prevent getting a disease by purposely inoculating themselves with infected material. This is considered to have first been done successfully with smallpox before 200 B.C.E. (NMAH 2007), and having been practiced in India as early as 1000 B.C.E. (Bourzac 2002). However, this idea of such an early treatment has been challenged and the earliest confirmed inoculations are from China around 1000 C.E. (Last 2002), and were widely practiced during the Ming Dynasty (Temple 1986).

These early inoculations involved the process of variolation, involving either nasal insufflation of powdered smallpox scabs, or scratching material from a smallpox lesion into the skin. However, because the person was actually infected with the virus, a severe infection could result, and the person could transmit smallpox to others. However, the mortality rate was much less than the contracting the disease itself.

From China, this practice of variolation spread along the silk route, reaching Asia Minor sometime in the seventeenth century. In 1718, Lady Mary Wortley Montague, wife of the British ambassador to the Ottoman Empire, reported that the Turks have a habit of deliberately inoculating themselves with fluid taken from mild cases of smallpox and she inoculated her own children (Behbehani 1983). She imported this idea to England when she returned home, and many educated English families used this method to offer some protection against smallpox (Last 2002). Jenner himself was inoculated at a young age (Gross and Sepkowitz 1998).

Around the time of Jenner, smallpox was greatly feared, as one in three of those who contracted the disease died, and those who survived were often badly disfigured. Voltaire recorded that 60.243 percent of people caught smallpox, with 20 percent of the population dying of it.

It was noticed by many that people who had been infected with cowpox, a milder relative of the smallpox virus, did not get smallpox. After 1770, there were at least several people in England and Germany (Sevel, Jensen, Jesty 1774, Rendall, Plett 1791) who had successfully tested the possibility of using the cowpox vaccine as an immunization for smallpox in humans (Plett 2006).

Jenner's Initial Theory
In fact, Jenner thought the initial source of infection was a disease of horses, called "the grease," and that this was transferred to cows by farm workers, transformed, and then manifested as cowpox. From that point on he was correct, the complication probably arose from coincidence.

In 1774, during a smallpox epidemic, Dorset farmer, Benjamin Jesty had successfully induced immunity in his wife and two children with cowpox. There was a popular belief that people infected and recovered from cowpox did not get smallpox, and Jesty noticed that "milkmaids" did not become infected with smallpox, or displayed a milder form. Jestey took the pus from an infected cow's udder and inoculated his wife and children with cowpox.

It is not known whether Jenner had the advantage of hearing stories of Jesty and perhaps others deliberately arranging cowpox infection of their families and of a reduced risk in those families. However, noting the common observation that milkmaids did not generally get smallpox, Jenner theorized that the pus in the blisters that milkmaids received from cowpox protected the milkmaids from smallpox.

Known: that smallpox was more dangerous than variolation and cowpox less dangerous than variolation.

The hypothesis tested: That infection with cowpox would give immunity to smallpox.

The test: If variolation failed to produce an infection, Phipps was shown to be immune to smallpox.

The consequence: Immunity to smallpox could be induced much more safely.

On 14 May 1796, Jenner tested his theory by inoculating James Phipps, a young boy of 8 years old, with material from the cowpox blisters of the hand of Sarah Nelmes, a milkmaid who had caught cowpox from a cow called Blossom (JM). Blossom's hide now hangs on the wall of the library at St George's medical school (now in Tooting), in commemoration of one of the school's most renowned alumni. Phipps was the 17th case described in Jenner's first paper on vaccination.

Jenner inoculated Phipps with cowpox pus in both arms on one day, by scraping the pus from Nelmes' blisters onto a piece of wood then transferring this to Phipps' arms. This produced a fever and some uneasiness but no great illness. Later, he injected Phipps with variolous material, which would have been the routine attempt to produce immunity at that time. No disease followed. Jenner reported that later the boy was again challenged with variolacious material and again showed no sign of infection.

He continued his research and reported it to the Royal Society, who did not publish the initial report. After improvement and further work, he published a report of twenty-three cases, mostof theim children that he had inoculated, all of whom survived unharmed and did not get smallpox. Some of Jenner's conclusions were correct, and some erroneous. The medical establishment, as cautious then as now, considered his findings for some time before accepting them. Eventually vaccination was accepted, and in 1840, the British government banned variolation and provided vaccination free of charge.

1802 caricature of Jenner vaccinating patients who feared it would make them sprout cowlike appendages.

Later life

Jenner's continuing work on vaccination prevented his continuing his ordinary medical practice. He was supported by his colleagues and the King in petitioning Parliament and was granted £10,000 for his work on vaccination. In 1806, he was granted another £20,000 for his continuing work.

In 1803, in London, he became involved with the Jennerian Institution, a society concerned with promoting vaccination to eradicate smallpox. In 1808, with government aid, this society became the National Vaccine Establishment. Jenner became a member of the Medical and Chirurgical Society on its foundation in 1805, and subsequently presented to them a number of papers. This is now the Royal Society of Medicine.

Returning to London in 1811, Jenner observed a significant number of cases of smallpox after vaccination occurring. He found that in these cases the severity of the illness was notably diminished by the previous vaccination. In 1821, he was appointed Physician Extraordinary to King George IV, a considerable national honor, and was made Mayor of Berkeley and Justice of the Peace. He continued his interests in natural history. In 1823, the last year of his life, he presented his Observations on the Migration of Birds to the Royal Society.

He was found in a state of apoplexy on 25 January 1823, with his right side paralyzed. He never rallied, and died of what was apparently a stroke (he had suffered a previous stroke) on January 26, 1823 at the age of 73. He was survived by one son and one daughter, his elder son having died of tuberculosis at the age of 21.

Legacy

In 1980, the World Health Organization declared smallpox an eradicated disease. This was the result of coordinated public health efforts by many people, but vaccination was an essential component. Although it was declared eradicated, some samples still remain in laboratories in Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia in the United States, and State Research Center of Virology and Biotechnology VECTOR in Koltsovo, Novosibirsk Oblast, Russia.

Monuments

Bronze in Kensington Gardens
  • Jenner's house is now a small museum housing among other things the horns of the cow, Blossom. It lies in the Gloucestershire village of Berkeley.
  • Jenner was buried in the chancel of the parish church of Berkeley
  • A statue, by Robert William Sievier, was erected in the nave of Gloucester Cathedral
  • A statue was erected in Trafalgar Square, later moved to Kensington Gardens (RCP)
  • A small grouping of villages in Somerset County, Pennsylvania, United States, were named in honour of Jenner by early nineteenth century English settlers, including what are now the towns of Jenners, Jenner Township, Jenner Crossroads and Jennerstown, Pennsylvania.

Publications

  • 1798 An Inquiry Into the Causes and Effects of the Variolæ Vaccinæ
  • 1799 Further Observations on the Variolœ Vaccinœ
  • 1800 A Continuation of Facts and Observations relative to the Variolœ Vaccinœ 40pgs
  • 1801 The Origin of the Vaccine Inoculation 12pgs

References
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