POPM 3240 Lecture Notes - Lecture 1: Genetic Epidemiology, Epidemiological Method, Herd Immunity

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Unit 1: foundations in health and disease transmission. Application of epidemiological methods allow us to understand a number of different things; Health promotion, disease prevention and prolongation of high-quality life. Health: a state of complete physical, mental and social well-being, and not merely the absence of disease or infirmity. Disease: derangement in the function of the whole body of the host or any of its parts. Illness is a subjective state of the person who feels aware of not being well. In 1900 in the us the leading causes of death were pneumonia, influenza, tuberculosis in 2009 the leading causes were heart disease, cancer, chronic lower respiratory disease. Primary: preventing the initial development of a disease (immunization, reducing exposure to a risk factor: education, health protection, aim to increase the individual"s resistance to disease and to decrease the individuals susceptibility to disease. Secondary: early detection of existing disease to reduce severity and complications (screening for cancer)

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