Epidemiological surveillance allows public health practitioners to measure and monitor rates and trends of disease in a population. These data help identify where disease is concentrated, who is affected, and if data are collected over time, how population needs and disease impact is changing.  

HIV surveillance is generally implemented in two ways: via collection of data on all known cases (i.e., case-based surveillance), and/or via survey methodology (i.e., sentinel surveillance surveys, general population surveys, biological and behavioral surveys).

Surveillance data define where the greatest needs are so that government knows what to do, where, and when. Having strong systems and process in place that can generate reliable data in a routine manner—and human resources to use and manage them—means that evidence-based public health interventions can always be planned.

NASTAD Global has supported many countries to develop, improve, and institutionalize their surveillance methods such that trends can be assessed, focal needs can be identified and critical service and program gaps can be identified. NASTAD Global works with government partners to:

  • Define the HIV surveillance needs
  • Assess existing resources and opportunities
  • Develop or augment a surveillance process
  • Develop or refine tools, materials, procedure manuals and/or data systems

To support implementation success, NASTAD Global provides formal and informal needs-based training in areas such as system use, staff leadership and management, process Monitoring and Evaluation (M&E), data analysis, and data presentation and use. 

In keeping with the Global Program philosophy, NASTAD uses a peer-based approach to build the capacity of the partner government as the implementer, supporting the goal of local ownership and implementation for long-term sustainability.