Table 1

Summary of adverse events following immunisation (AEFI) data sources mapped in Nigeria as a first step of data triangulation

Data sourceManaging agencyData system typeWho enters dataFormat of reportingLevel of reportingBreadth of useIncorporated into the COVID-19 vaccine AEFI triangulation dashboard?
Call-in dataNational Emergency Routine Immunization Coordination CentrePaperHealthcare workersPhysical transfer, phone, emailLocal Government Area levelNationally, by all health facilities administering COVID-19 vaccinesYes
Line list dataLocal Government AreaPaperHealthcare workersPhysical transfer, phone, email, REDCap app/web systemClient levelNationally, by all health facilities administering COVID-19 vaccines, with REDCap reporting in five states (Lagos, Rivers, Federal Capital Territory, Oyo and Kano) onlyYes, for five states (Lagos, Rivers, Federal Capital Territory, Oyo and Kano)
District Health Information System 2 (DHIS2)The Federal Ministry of HealthElectronicHealthcare workersDHIS2 app/web systemClient levelAt all health facilities in two pilot states (Akwa Ibom and Ekiti) as of August 2022, with plan for national use by all health facilities administering COVID-19 vaccineYes, for two states (Akwa Ibom and Ekiti)
Med SafetyNational Agency for Food and Drug Administration and ControlElectronicClients, healthcare workersMed Safety appClient levelIn select health facilities administering COVID-19 vaccineNo
  • REDCap, Research Electronic Data Capture.