Why use GIS?
GIS provides a relatively straight forward way of envisioning these “clusters” of disease within a defined geographic region
Identifying the “hot spots” allows public heath practitioners, such as disease intervention specialists (DIS), to target the most important persons or groups of persons
Combining GIS with SNA may result in the pinpointing of “core transmitters” within a community
More efficient use of testing and counseling resources could then be implemented