Public Health Environmental Surveillance Evaluation Framework (PHES-EF)
The Public Health Environmental Surveillance Evaluation Framework (PHES-EF) is an international consensus study designed to develop a comprehensive framework for evaluating public health environmental surveillance systems, using wastewater-based surveillance as a practical example.
This work employs the Delphi method — an iterative, multi-round survey process that combines structured feedback and participant anonymity to elicit expert consensus on complex issues. By engaging a diverse panel of global experts through an open-science approach, the study seeks to produce an evidence-informed framework for assessing the performance of surveillance systems and creating analogous evaluation results for comparison within the field. Learn more about the Delphi study and how it works.
Next Steps: Active recruitment (summer 2025) and the launching the Delphi consensus process (fall 2025).