GIS in the health field is the analysis of the relationship between the environment and human life with the disease, nutrition and health care system to explain the reciprocal relationship in space. GIS in the health sector is also part of human geography-related aspects - aspects of the geography of the (status) and health (system) health care. In health geography studies identified a relationship between the three components related to the geography of disease, geography and the geography of health care nutrition, with analysis on a regional scale for the third pengintegarsian approach. But in health geography, there are two fast-growing sub-discipline of geography is the geography of disease and health services.
Geography of the disease include exploration, description and modeling of space-time on the incidence of disease, with regard to environmental issues, detection and cluster analysis and the pattern of spread of disease, analysis of cause - effect and the formulation of a hypothesis - a new hypothesis about the cause of the disease. Geography plays an important role in disease surveillance, health interventions, and disease prevention strategies. An example of the spread of disease in an area and whether there are effects of the condition of the area, TB, Polio, and for other diseases.
Geography of the health care system, with regard to planning, management and assurance services to fit the needs, formulate public health needs are served and the pattern of the area served by health officials. Research on the geography of health services to identify gaps in health services between regions and the other one and the allocation of limited resources. As an example of allocating power to the area - an area in need and help the placement of new health facilities and expansion of existing ones.
Spatial analysis of disease is an important tool in epidemiological investigations. This means helping to investigate aetologi illness or environmental hazard. One example of spatial analysis of water borne disease carried kebagsaan dangendrof a German town where the Rhine-Berg beliu analyze spatial patterns of diarrheal disease and kaitanya with water supply in the city of North Rhine-berg - jerman.Penelitiannya found that the central and southern areas of the city there many cases than the northern regions. From these results, he also found a statistically significant relationship between the incidence of gastroenteritis and the number of people who have a supply of water from the soil. Besides this factor there is penggangu population movement, the number of doctors in each area and private wells. From the above examples of GIS use, whether conducted by researchers - researchers abroad and at home. We can conclude that GIS is very helpful in our work