What did john snow discover

John snow, cholera
How did john snow discover cholera
How did john snow improve public health

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John Snow (1813-1858)

Physician

Plaque: on the John Snow Memorial, North Street Gardens, York YO1 6JF

John Snow was a physician, a pioneer in the fields of anaesthesia and epidemiology, famed for his tracing of the source of a cholera outbreak in Soho and confirming that it is a waterborne disease. He was born on 15 March 1813 in North Street, York, the eldest of the nine children of William Snow (1783-1846), a labourer in the nearby coalyard, and his wife, Frances Askham (1789-1860). In spite of their humble beginnings in what was one of the poorest parts of the city, both parents were keen that their children should better themselves and do well in life. In this, they succeeded; John became a leader in two medical fields; of his brothers and sisters, two became teachers, one a clergyman, one a colliery manager and one ran a temperance hotel in York.

In an age of high infant mortality, William and Frances lost only one child, George, the youngest of the family, who died aged 18 months in June 1830. By 1819 William had changed his job to become a driver of a horse-drawn deli

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John Snow (1813 - 1858)

John Snow ©Snow was a British physician who is considered one of the founders of epidemiology for his work identifying the source of a cholera outbreak in 1854.

John Snow was born into a labourer's family on 15 March 1813 in York and at 14 was apprenticed to a surgeon. In 1836, he moved to London to start his formal medical education. He became a member of the Royal College of Surgeons in 1838, graduated from the University of London in 1844 and was admitted to the Royal College of Physicians in 1850.

At the time, it was assumed that cholera was airborne. However, Snow did not accept this 'miasma' (bad air) theory, arguing that in fact entered the body through the mouth. He published his ideas in an essay 'On the Mode of Communication of Cholera' in 1849. A few years later, Snow was able to prove his theory in dramatic circumstances. In August 1854, a cholera outbreak occurred in Soho. After careful investigation, including plotting cases of cholera on a map of the area, Snow was able to identify a water pump in Broad (now Broadwick) Street as th

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John Snow

English epidemiologist and physician (1813–1858)

This article is about the physician. For other uses, see John Snow (disambiguation).

John Snow (15 March 1813 – 16 June 1858^[1]) was an English physician and a leader in the development of anaesthesia and medical hygiene. He is considered one of the founders of modern epidemiology and early germ theory, in part because of his work in tracing the source of a cholera outbreak in London's Soho, which he identified as a particular public water pump. Snow's findings inspired fundamental changes in the water and waste systems of London, which led to similar changes in other cities, and a significant improvement in general public health around the world.^[2]

Early life and education

Snow was born on 15 March 1813 in York, England, the first of nine children born to William and Frances Snow in their North Street home, and was baptised at All Saints' Church, North Street, York. His father was a labourer^[3] who worked at a local coal yard, by the Ouse, constantly replenished from the Yorkshire