The use of Geographic Information Systems (GIS) in the health sector is an idea whose time has come. The current applications of GIS in health are diverse and extensive. The present GIS environment is heavily driven by technology and such an approach is indeed logical for the most part. However, the needs of less developed countries in utilizing the concepts and technologies of mapping should not be neglected in the continuing evolution of GIS. Geographic Information Systems and Health Applications presents a sampling of the many applications utilizing GIS in the field of health.