Table 2.

Definitions of core concepts relevant to integrated surveillance.

Concept	Definition
Integrated surveillance	Systematic collection, analysis, interpretation of data, and dissemination of information collected from different components of a system to provide a global, multidisciplinary, multiperspective understanding of a health problem and to inform system-based decisions across all relevant sectors [adapted from Stärk et al. (19)].
Level of integration	The level of integration of a surveillance system refers to the degree of intensity in the integration of different components within each surveillance activity (i.e., data collection, analysis, interpretation, and dissemination) across sectors, implemented to provide a global, multidisciplinary, and multiperspective understanding of a health problem and to inform system-based decisions.
Integrated surveillance system	An integrated surveillance system consists of a planned set of components that are organized and interconnected in order to achieve the objectives of the integrated surveillance, including its resources, infrastructures, activities, and internal and external factors.