Geography

18 Oct

Epidemiology and geography since long ago share common interests.
Epidemiologists have always searched the causes of contagious diseases by locating the very place where the outbreak began. Hence the necessity to develop sophisticated geographical statistical analysis methods in order to localize the point from where the disease originates and then spread across the country. But nowadays those methods are also implemented by searchers to highlight high concentrations of non epidemic, chronic, degenerative diseases in a given country. Here the causal agent is no more a bacteria nor a virus but indeed a spot of concentration of social inequality (or pollution, depending of the research question ). If a geographical concentration exist of lack of knowledge of what a healthy behavior is, or of low incomes restraining access to a healthy life, then the analysis should uncover a higher prevalence of the degenerative disease at less this is the hypothesis. Here below is a link toward a paper very accurate in demonstrating how different geographical statistical analysis methods can lead to a variation in the epidemiological results obtained. This point is crucial to consider because were it Ebola virus or social inequality or educational level context, causes of diseases will always have something to do with geography!
http://jech.bmj.com/content/59/6/517.full.pdf

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