HED 044 Lecture 6: HED 44 Lecture 6
2 Nov 2020
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Document Summary
Observed that disease varies by location, environment, and behavior. Major contribution to epidemiology was systematic observation. Considered one of the fathers of epidemiology. First on record to assess geographic distribution of disease and tried to. Approx 500 deaths in span of 10 days. Snow mapped cases, plotted occurrence of cases. Recognized that cases shared the same water source. Brewery and workhouse with separate water source were protected. Removed the handle of the broad street pump. Epidemic: occurrence of cases of a disease or health-related event in excess of normal expectancy. Population: all inhabitants of a given area (or other defining characteristic) considered together. Population at risk : those individuals who are considered at risk for developing outcome studied. Morbidity: occurrence of illness within a population. Mortality: occurrence of deaths within a population. Incidence: number of new cases of disease (or other health-related condition) in a population. Prevalence: number of existing cases of disease (or other health-related condition) in a population.
