Edward Jenner
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| Edward Jenner | |
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Edward Jenner by James Northcote
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| Born | 17 May 1749 Berkeley, Gloucestershire |
| Died | 26 January 1823 (aged 73) Berkeley, Gloucestershire |
| Residence | Berkeley, Gloucestershire |
| Nationality | English |
| Fields | Medicine/surgery, natural history |
| Alma mater | St George's, University of London University of St. Andrews |
| Academic advisors | John Hunter |
| Known for | Smallpox vaccine; Vaccination |
Contents
Early life
Edward Jenner went to school in Wotton-under-Edge and Cirencester.[8] During this time he was inoculated for smallpox, which had a lifelong effect upon his general health.[8] At the age of 14 he was apprenticed for seven years to Mr Daniel Ludlow, a surgeon of Chipping Sodbury, South Gloucestershire, where he gained most of the experience needed to become a surgeon himself.[8]
In 1770, Edward Jenner became apprenticed in surgery and anatomy under surgeon John Hunter and others at St George's Hospital.[9] William Osler records that Hunter gave Jenner William Harvey's advice, very famous in medical circles (and characteristic of the Age of Enlightenment), "Don't think; try."[10] Hunter remained in correspondence with Jenner over natural history and proposed him for the Royal Society. Returning to his native countryside by 1773, Jenner became a successful family doctor and surgeon, practicing on dedicated premises at Berkeley.
Jenner and others formed the Fleece Medical Society or Gloucestershire Medical Society, so called because it met in the parlor of the Fleece Inn, Rodborough, in Rodborough, Gloucestershire, meeting to dine together and read papers on medical subjects. Jenner contributed papers on angina pectoris, ophthalmia, and cardiac valvular disease and commented on cowpox. He also belonged to a similar society that met in Alveston, near Bristol.[11]
He became a Master Mason December 30, 1802 in Lodge of Faith and Friendship #449. From 1812-1813, he served as Worshipful Master of Royal Berkeley Lodge of Faith and Friendship.[12]
Natural history, science and marriage
Jenner was elected Fellow of the Royal Society in 1788, following his publication of a careful study of the previously misunderstood life of the nested cuckoo that combined observation, experiment, and dissection.
"The singularity of its shape is well adapted to these purposes; for, different from other newly hatched birds, its back from the scapula downwards is very broad, with a considerable depression in the middle. This depression seems formed by nature for the design of giving a more secure lodgement to the egg of the Hedge-sparrow, or its young one, when the young Cuckoo is employed in removing either of them from the nest. When it is about twelve days old, this cavity is quite filled up, and then the back assumes the shape of nestling birds in general." (Letter to Hunter at the Royal Society, as above)
Jenner's nephew assisted in the study.
Jenner married Catherine Kingscote (died 1815 from tuberculosis) in March 1788 after meeting her while he and other Fellows were experimenting with balloons. Jenner's trial balloon descended into Kingscote Park, Gloucestershire, owned by Anthony Kingscote, one of whose daughters was Catherine.
Jenner earned his MD from the University of St Andrews in 1792.
Jenner is also credited with advancing understanding of angina pectoris.[16] In his correspondence with Heberden, he wrote, "How much the heart must suffer from the coronary arteries not being able to perform their functions."
Inoculation was already a standard practice, but involved serious risks. In 1721, Lady Mary Wortley Montagu had imported variolation to Britain after having observed it in Istanbul, where her husband was the British ambassador. Voltaire, writing of this, estimates that at this time 60% of the population caught smallpox and 20% of the population died of it.[17] Voltaire also states that the Circassians used the inoculation from times immemorial, and the custom may have been borrowed by the Turks from the Circassians.[18]
In 1765, Dr John Fewster published a paper in the London Medical Society entitled "Cow pox and its ability to prevent smallpox", but he did not pursue the subject further.[19]
In the years following 1770, at least five investigators in England and Germany (Sevel, Jensen, Jesty 1774, Rendell, Plett 1791) successfully tested a cowpox vaccine in humans against smallpox.[20] For example, Dorset farmer Benjamin Jesty[21] successfully vaccinated and presumably induced immunity with cowpox in his wife and two children during a smallpox epidemic in 1774, but it was not until Jenner's work some 20 years later that the procedure became widely understood. Indeed, Jenner may have been aware of Jesty's procedures and success.[22]
| Jenner's Theory: |
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| The initial source of infection was a disease of horses, called "the grease", which was transferred to cattle by farm workers, transformed, and then manifested as cowpox. |
On 14 May 1796, Jenner tested his hypothesis by inoculating James Phipps, an eight-year-old boy who was the son of Jenner's gardener. He scraped pus from cowpox blisters on the hands of Sarah Nelmes, a milkmaid who had caught cowpox from a cow called Blossom,[23] whose hide now hangs on the wall of the St George's medical school library (now in Tooting). Phipps was the 17th case described in Jenner's first paper[24] on vaccination.
Jenner inoculated Phipps in both arms that day, subsequently producing in Phipps a fever and some uneasiness, but no full-blown infection. Later, he injected Phipps with variolous material, the routine method of immunization at that time. No disease followed. The boy was later challenged with variolous material and again showed no sign of infection.
| Known: |
|---|
| Smallpox is more dangerous than variolation and cowpox less dangerous than variolation. |
| Hypothesis: |
| Infection with cowpox gives immunity to smallpox. |
| Test: |
| If variolation after infection with cowpox fails to produce a smallpox infection, immunity to smallpox has been achieved. |
| Consequence: |
| Immunity to smallpox can be induced much more safely than by variolation. |
Jenner continued his research and reported it to the Royal Society, which did not publish the initial paper. After revisions and further investigations, he published his findings on the 23 cases. Some of his conclusions were correct, some erroneous; modern microbiological and microscopic methods would make his studies easier to reproduce. The medical establishment, cautious then as now, deliberated at length over his findings before accepting them. Eventually, vaccination was accepted, and in 1840, the British government banned variolation – the use of smallpox to induce immunity – and provided vaccination using cowpox free of charge. (See Vaccination acts). The success of his discovery soon spread around Europe and, for example, was used en masse in the Spanish Balmis Expedition,[26] a three-year-long mission to the Americas, the Philippines, Macao, China, and Saint Helena Island led by Dr. Francisco Javier de Balmis with the aim of giving thousands the smallpox vaccine. The expedition was successful, and Jenner wrote, "I don’t imagine the annals of history furnish an example of philanthropy so noble, so extensive as this."
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 founding in 1805 and presented a number of papers there. The society is now the Royal Society of Medicine. In 1806, Jenner was elected a foreign member of the Royal Swedish Academy of Sciences.
Returning to London in 1811, Jenner observed a significant number of cases of smallpox after vaccination. He found that in these cases the severity of the illness was notably diminished by previous vaccination. In 1821, he was appointed Physician Extraordinary to King George IV, a great national honour, and was also made Mayor of Berkeley and Justice of the Peace. He continued to investigate natural history, and in 1823, the last year of his life, he presented his "Observations on the Migration of Birds" to the Royal Society.
Legacy
In 1979, the World Health Organization declared smallpox an eradicated disease.[27] This was the result of coordinated public health efforts by many people, but vaccination was an essential component. And although the disease was declared eradicated, some pus samples still remain in laboratories in Centers for Disease Control and Prevention in Atlanta, Georgia, in the United States and State Research Center of Virology and Biotechnology VECTOR in Koltsovo, Novosibirsk Oblast, Russia.Jenner's vaccine also laid the foundation for contemporary discoveries in immunology, and the field he began may someday lead to cures for arthritis, AIDS, and many other diseases.[28]
An illustrated history of smallpox eradication, Smallpox Zero,[29] was published with the support of Sanofi Pasteur and distributed on 17 May 2010, in Geneva during an event sponsored by the World Health Organization.[30][31] Smallpox Zero includes President Thomas Jefferson's letter of congratulations to Edward Jenner.
In 2002, Jenner was named in the BBC's list of the 100 Greatest Britons following a UK-wide vote.[32]
The lunar crater Jenner is named in his honor.
Monuments and buildings
- Edward Jenner is buried in the Jenner family vault at the Church of St. Mary's, Berkeley.[33]
- Jenner's house in the village of Berkeley, Gloucestershire, is now a small museum, housing, among other things, the horns of the cow, Blossom.
- A statue of Jenner by Robert William Sievier was erected in the nave of Gloucester Cathedral.
- Another statue was erected in Trafalgar Square and later moved to Kensington Gardens.[34]
- Near the Gloucestershire village of Uley, Downham Hill is locally known as "Smallpox Hill" for its possible role in Jenner's studies of the disease.
- London's St. George's Hospital Medical School has a Jenner Pavilion, where his bust may be found.[35]
- A group of villages in Somerset County, Pennsylvania, United States, was named in Jenner's honor by early 19th-century English settlers, including Jenners, Jenner Township, Jenner Crossroads, and Jennerstown, Pennsylvania
- Jennersville, Pennsylvania, is located in Chester County.
- A section at Gloucestershire Royal Hospital is known as the Edward Jenner Ward; it is where blood is drawn.
- A ward at Northwick Park Hospital is called Jenner Ward.
- Jenner Gardens at Cheltenham, Gloucestershire, opposite one of the scientist's former offices, is a small garden and cemetery outside the walls of the upper town of Boulogne sur Mer, France.
- In The Henry Cort Community College, Fareham, Hampshire, a building is named after him.
- A street in Stoke Newington, north London: Jenner Road, N16
Publications
- 1798 An Inquiry into the Causes and Effects of the Variolæ Vaccinæ[36]
- 1799 Further Observations on the Variolæ Vaccinæ, or Cow-Pox.[37]
- 1800 A Continuation of Facts and Observations relative to the Variolæ Vaccinæ 40pgs[38]
- 1801 The Origin of the Vaccine Inoculation 12pgs
In popular culture
- The Walking Dead television series's character Edwin Jenner, a doctor affiliated with Atlanta's Centers for Disease Control, is a homage to Edward Jenner.
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