The Epidemic Of The Nineteenth Century

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Introduction The cholera outbreak or the epidemic of the mid-nineteenth century was the start of modern epidemiology. John Snow is considered the father of the modern epidemiology. Epidemiology is defined as “the distribution and determinants of health and diseases, morbidity, injuries, disability, and mortality in populations. Epidemiological studies are applied to the control of health problems in populations.” (Friis, Epidemiology 101, p. 3). During the mid-1800’s, John Snow revolutionized the epidemiological methods we are currently still using. John Snow believed that cholera was transmitted by contaminated water and was able to demonstrate this by mapping out the cases of cholera. Once he mapped out the cases he found that there was a cluster of cases around the Broad Street pump. The pump was removed after Snow present his evidence and the cases of cholera started to decline. This is truly remarkable for its time, linking the contaminate water to increasing cases of cholera at the time and this was all done before the development of the germ theory and the invention of the microscope. Shortly after the John Snow’s discovery, London started to in placed sewage systems. Sewage systems and treatment are responsible for providing clean drinkable to people in developed countries. Some developing countries aren’t fortunate enough to have sewage systems and treatments plants making it hard for their citizens to have access to clean drinkable water. Water is known to be
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