A system that collects data from a limited number of reporting sites. For example, it may only include a few hospitals within a country or state. This approach is advantageous where it is not feasible to include all reporting sites, or due to constraints of public health resources. 

The visual process of laying out all of the stakeholders of a product, project or idea on one map. The main benefit of a stakeholder map is to get a visual representation of all the people who can influence your project and how they are connected.