Surveillance data

  • Assessment
  • Implementation
  • Monitoring & Evaluation
  • Data value chain or data life cycle


Data collected on a recurring basis from designated locations (see sentinel sites) to provide insights on trends into a broader area and/or larger population.


National nutrition information systems – the fundamental series, modules 1–5, New York: United Nations Children’s Fund (UNICEF) and the World Health Organization (WHO), 2021.