EO and mapping is used to select “a priori” the best site to deploy the lab and to monitor the site situation. We can update geographical data, use structured data to improve the knowledge of the disease and the knowledge of the evolution of the disease on a geographical point of view. These maps can for example be marked with all the sources and streams in a region where a lab is deployed, if the suspected disease is related with water propagation. Using maps of buildings in the area can be interesting to know where to search for potential victims of another disease when a red zone is defined. Using maps of moves of animals can be used when related to animals which could be carrying or suffering from a disease.