Summary of adverse events following immunisation (AEFI) data sources mapped in Nigeria as a first step of data triangulation
| Data source | Managing agency | Data system type | Who enters data | Format of reporting | Level of reporting | Breadth of use | Incorporated into the COVID-19 vaccine AEFI triangulation dashboard? |
| Call-in data | National Emergency Routine Immunization Coordination Centre | Paper | Healthcare workers | Physical transfer, phone, email | Local Government Area level | Nationally, by all health facilities administering COVID-19 vaccines | Yes |
| Line list data | Local Government Area | Paper | Healthcare workers | Physical transfer, phone, email, REDCap app/web system | Client level | Nationally, by all health facilities administering COVID-19 vaccines, with REDCap reporting in five states (Lagos, Rivers, Federal Capital Territory, Oyo and Kano) only | Yes, for five states (Lagos, Rivers, Federal Capital Territory, Oyo and Kano) |
| District Health Information System 2 (DHIS2) | The Federal Ministry of Health | Electronic | Healthcare workers | DHIS2 app/web system | Client level | At 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 vaccine | Yes, for two states (Akwa Ibom and Ekiti) |
| Med Safety | National Agency for Food and Drug Administration and Control | Electronic | Clients, healthcare workers | Med Safety app | Client level | In select health facilities administering COVID-19 vaccine | No |
REDCap, Research Electronic Data Capture.