Table 1:

User requirements identified from requirements elicitation during the development of the first version of the system.

Category	Component	Functionality
Core system	Datasets	Must include 1) Integrated Disease Surveillance and Response (IDSR, received weekly) 2) Infection, Prevention and Control (IPC, received monthly), and 3) Alerts data (received daily).
	Input	Must accept tabular data formats (e.g. Excel and CSV). Must integrate with common mobile data collection APIs (KoboToolbox and CommCare).
	Output	Cross-browser web interface.
Analytics	IDSR, IPC	Must follow current MoHS guidelines.
	Alerts	Use baseline mortality rates for Sierra Leone for thresholds.
	Reporting	Must include whether facilities reported on-time for IDSR and IPC.
	Risk score	Provide aggregate risk statistics for all three datasets.
	Smart search	Ability to geographically and semantically search over related datasets that are collected ad hoc and are not included in the district health information system (DHIS2).
Network	Loading time	The initial loading of the page should take no longer than 5 seconds under normal conditions in Port Loko DHMT.
Usability	Data subsets	System must provide functionality to select data by district, chiefdom and section.
	Data visualization	Data should be represented on graphs and maps, and visualizations should be exported as PDFs.
	Training requirements	The system should require minimal training (less than a day) and should not require specialized software skills (e.g. GIS data skills).
Security	Access privileges	Due to the sensitive nature of the data stored, each user requires secure, individual access to the server.