Figure 6.

Conceptual illustration of how the EMOD campaign framework links together building blocks to enable a user-defined health care system and health-seeking behaviors. Individual building blocks specify the time that the intervention becomes available; the target population based on socio-demographic strata such as age, sex, location and user-defined characteristics such as risk group or accessibility; and the triggering condition for the intervention to be applied, if any. The building blocks are specified in JSON format read in by EMOD. The blocks are connected through broadcasts and triggers to build up series of events such as decisions, delays, diagnostics and interventions. The campaign framework can also be used to initialize new infections and to define the dynamics of co-factors for transmission, such as acquisition and treatment of STI co-infections that influence HIV transmissibility and susceptibility. Image credit for photograph in (a): ‘ Brand new bricks ’ by fdecomite, CC BY 2.0.