Q2 2026
West African Wastewater Surveillance
Reference

Glossary

Definitions of the core concepts used throughout the dashboard.


Researched
Exploratory or academic WES work led by a university or research institute. No requirement for a regular schedule, minimum number of sites, or government reporting. Proves technical feasibility, builds local evidence, trains personnel. Does not constitute surveillance until routine.
Surveyed
Routine, scheduled wastewater monitoring for a specific pathogen — regardless of the number of sites or frequency. Operationally active and repeatable, but may sit outside the national surveillance architecture or feed only into a parallel system.
Integrated
WES data is formally linked to the national disease surveillance and response system. Results demonstrably inform government decisions through e.g. vaccination campaigns, outbreak alerts, policy updates. Requires both a data flow and an institutional mandate to act on the data.
Cost per sample
The complete unit cost in USD to collect, transport, process, and analyse one sample from one site. Includes direct recurrent costs, capital costs, and indirect costs (overheads).
Population coverage
The estimated proportion of the country's total population that the WES system covers. Includes the estimated proportion linked to formal sewage systems (sewered population). High sewerage coverage is a key enabler for expanding WES scope.