The field of medical geographic information systems medical gis has become extremely useful in understanding the bigger picture of public health the discipline holds a substantial capacity to understand not only differences but also similarities in population health all over the world the main . Todays public health problems are much larger in scope than those dr snow faced and researchers today depend on modern gis and other computer mapping applications to assist in their analyses. Gis is a computer system consisting of hardware and software used to store manipulate analyze model and display spatial and non spatial data for more information check out what is gis visit our geo spatial data resources section to explore a wealth of spatial environmental and public health datasets. In addition to using gis to map disease public health agencies have recently begun using gis to identify disparities and inequalities in income and the availability of quality healthcare in an effort to determine where new development should be focused. Public health uses of gis include tracking child immunizations conducting health policy research and establishing service areas and districts gis provides a way to move data from the project level so that it can be used by the entire organization
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