International population movements and public health in the Mekong region: an overview of some issues concerning mapping.

Geographical Information Systems (GIS) have many important applications in local, regional and global situation analysis, especially in relation to planning and implementation thereof. The complex issues involved in population movement between neighboring countries offer a good example of the assistance that GIS applications can provide to transborder public health planning. The Greater Mekong Subregion (GMS) involves 6 countries, among which greatly increased population movement is occurring for a variety of reasons. This movement carries with it high risks of disease dispersal and thus presents a major challenge to disease control. This paper addresses the questions of sources, access and presentation of a wide variety of data that is needed by planners to develop more appropriate cooperative approaches to public health management in the GMS, with the main focus on contributions from mapping.