|  | <p> | 
|  | The Spatio-Temporal Epidemiological Modeler (STEM) is a tool designed to help scientists and | 
|  | public health officials create and use models of emerging infectious diseases. STEM uses mathematical | 
|  | models of diseases (based on differential equations) to simulate the development or evolution of a | 
|  | disease in space and time (e.g., avian flu or salmonella). These models could aid in understanding, | 
|  | and potentially preventing, the spread of such diseases. STEM also comes pre-configured with a vast | 
|  | amount of reference or denominator data for the entire world. By using and extending the data and models | 
|  | in STEM it is possible to rapidly prototype and test models for emerging infectious disease. STEM also | 
|  | provides tools to help you compare and validate your models. As an open source project, the ultimate goal | 
|  | of STEM is to support and encourage a community of scientists that not only use STEM as a tool but also | 
|  | contribute back to it. STEM is designed so that models and scenarios can be easily shared, extended, and | 
|  | built upon. | 
|  | </p> |