TABLE 1. Comparison of two popular definitions of public health surveillance, 2023.

Description	Definition
	World Health Organization (11)	US Centers for Disease Control and Prevention (12)
Characteristics	Continuous Systematic	Ongoing Systematic
Steps	Collection Orderly consolidation and Evaluation of pertinent data With prompt dissemination of results to those who need to know, particularly those who are in a position to take action	Collection Analysis and Interpretation of health-related data Essential to planning, implementation and evaluation of public health practice

Source: Table developed by the authors based on the cited references.