John Haygarth
Encyclopedia
John Haygarth was an important 18th-century British physician who discovered new ways to prevent the spread of fever among patients and reduce the mortality rate of smallpox
Smallpox
Smallpox was an infectious disease unique to humans, caused by either of two virus variants, Variola major and Variola minor. The disease is also known by the Latin names Variola or Variola vera, which is a derivative of the Latin varius, meaning "spotted", or varus, meaning "pimple"...

.

Haygarth was born to William Haygarth and Magdalen Metcalfe at Garsdale
Garsdale
Garsdale is a civil parish occupying a narrow populated valley in Cumbria, England. It is on the western slopes of the Pennines, between Baugh Fell to the north, and Rise Hill to the south. The main hamlet, called “The Street”, lies on the A684 road, east of Sedbergh, and west of Hawes...

, West Riding of Yorkshire
West Riding of Yorkshire
The West Riding of Yorkshire is one of the three historic subdivisions of Yorkshire, England. From 1889 to 1974 the administrative county, County of York, West Riding , was based closely on the historic boundaries...

, where his grandparents' initials can still be seen above the door. He attended Sedbergh School
Sedbergh School
Sedbergh School is a boarding school in Sedbergh, Cumbria, for boys and girls aged 13 to 18. Nestled in the Howgill Fells, it is known for sporting sides, such as its Rugby Union 1st XV.-Background:...

 and was tutored by John Dawson
John Dawson (surgeon)
John Dawson was both a mathematician and surgeon. He was born at Raygill in Garsdale, then in the West Riding of Yorkshire, where "Dawson's Rock" celebrates the site of his early thinking about conic sections...

, a fellow Sedberghian and a surgeon and mathematician. He attended St. John's College, Cambridge from 1759 to 1766. Simultaneously, Haygarth studied medicine in Edinburgh, London and Paris, after which he was appointed physician to Chester Infirmary in 1766. A decade later he married Sarah Vere Widdons on 23 January 1776; together they had four daughters and two sons.

Haygarth spent 30 years at Chester and became known as one of the best physicians of his time. Like William Cullen
William Cullen
William Cullen FRS FRSE FRCPE FPSG was a Scottish physician, chemist and agriculturalist, and one of the most important professors at the Edinburgh Medical School, during its heyday as the leading center of medical education in the English-speaking world.Cullen was also a central figure in the...

, James Currie and Thomas Percival
Thomas Percival
Thomas Percival FRS FRSE FSA was an English physician and author, best known for crafting perhaps the first modern code of medical ethics...

, he was interested in a wide array of medical and social justice issues. He was particularly interested in the treatment of fever patients and the prevention of smallpox
Smallpox
Smallpox was an infectious disease unique to humans, caused by either of two virus variants, Variola major and Variola minor. The disease is also known by the Latin names Variola or Variola vera, which is a derivative of the Latin varius, meaning "spotted", or varus, meaning "pimple"...

. Although he was an Anglican, Haygarth was supported by a network of Dissenting
English Dissenters
English Dissenters were Christians who separated from the Church of England in the 16th, 17th and 18th centuries.They originally agitated for a wide reaching Protestant Reformation of the Established Church, and triumphed briefly under Oliver Cromwell....

 men of science and letters who helped spread his ideas. In 1774, as part of a census he administered in Chester, he asked residents about their medical history. From this information he concluded that fever patients should be separated from others and his discovery that only a tiny fraction of the population of Chester had never had smallpox led him to focus his energy on prevention. He wrote up these findings in a paper, Observations on the Population and Diseases of Chester.

In 1778 Haygarth helped found the Smallpox Society of Chester; the group advocated inoculation, an unpopular position at the time, and tried to educate the populace so as to avoid casual contraction of the disease. Only four years after this effort began, Chester's smallpox mortality rate had been reduced by almost 50%. Soon other towns, such as Leeds
Leeds
Leeds is a city and metropolitan borough in West Yorkshire, England. In 2001 Leeds' main urban subdivision had a population of 443,247, while the entire city has a population of 798,800 , making it the 30th-most populous city in the European Union.Leeds is the cultural, financial and commercial...

 and Liverpool
Liverpool
Liverpool is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880...

, adopted the Society's methods. They were assisted by his Inquiry how to Prevent the Small Pox (1784) which included statistical calculations supported by John Dawson. The book was translated into French and German and made Haygarth an internationally-known figure. He further elaborated his ideas in Sketch of a plan to exterminate the casual small pox from Great Britain and to introduction general inoculation (1793). Unfortunately, he plan to inspect homes and provide general inoculation was resisted in the increasingly conservative 1790s. For his important work on smallpox, Haygarth was elected as a Fellow of the Royal Society in 1781.

Haygarth did not abandon his research into fever patients, however. He performed several experiments and determined that separating fever patients within a hospital reduced mortality rates. When his plan was put into effect in Chester in 1783, the first fever wards in Britain, all except one of the 30 fever patients recovered. The following year, his precautions helped to stop the spread of typhus
Typhus
Epidemic typhus is a form of typhus so named because the disease often causes epidemics following wars and natural disasters...

 in the town.

In 1798 Haygarth moved to Bath and continued his research. After analyzing his records from Chester, he published a treatise on rheumatic fever
Rheumatic fever
Rheumatic fever is an inflammatory disease that occurs following a Streptococcus pyogenes infection, such as strep throat or scarlet fever. Believed to be caused by antibody cross-reactivity that can involve the heart, joints, skin, and brain, the illness typically develops two to three weeks after...

 and on gout
Gout
Gout is a medical condition usually characterized by recurrent attacks of acute inflammatory arthritis—a red, tender, hot, swollen joint. The metatarsal-phalangeal joint at the base of the big toe is the most commonly affected . However, it may also present as tophi, kidney stones, or urate...

. He continued publishing medical papers in the journal of the Royal Society, Philosophical Transactions. Haygarth also promoted free, universal education, a position he supported in his Letter to Bishop Porteous (1812). He also helped found banks that would allow people to save money more efficiently and safely.

The Placebo Effect
In 1799, Haygarth investigated the efficacy of medical instruments called "Perkins tractors". These were metal pointers which were supposedly able to 'draw out' disease. They were sold at the extremely high price of five guineas, and Haygarth set out to show that the high cost was unnecessary. He did this by comparing the results from dummy wooden tractors with a set of allegedly "active" metal tractors, and published his findings in a book “On the Imagination as a Cause & as a Cure of Disorders of the Body.”.

The wooden pointers were just as useful as the expensive metal ones, showing "to a degree which has never been suspected, what powerful influence upon diseases is produced by mere imagination". While the word placebo had been used since 1772, this is the first real demonstration of the placebo effect.

Haygarth recognised this is the reason why famous doctors are often more successful than unknowns. He even went on to suggest that much medicine of the day relied on the placebo effect.

Haygarth died at Lambridge House near Bath on 10 June 1827, and was buried at Swainswick church. A ward at the Chester Infirmary was named after him and a Haygarth medal was established for the best nurse in the hospital.
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