Cholera was the disease epidemic that struck London in 1848, which was the first example of the use of epidemiology.
The technique of epidemiology is used to identify the root causes of diseases and other health issues in populations. In epidemiology, the population as a whole is seen as the patient.
The field of medicine known as epidemiology studies human populations to identify the origins and spread of diseases that affect various populations over a given period of time. It also helps in the development of prevention strategies to slow the spread of disease. The study of populations and all cases that can be identified within them is known as epidemiology.
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