Table 3

Performance of surveillance system quality, Liberia, 2020–2021

AttributesIndicatorsSurveillance levelDenominatorExpected performanceObserved n (%)
UsefulnessSurveillance units that produced reports/bulletin for decision-makingNational county and district17 surveillance units100%17 (100%)
SimplicityCase-based reporting forms required by the system for reporting suspected EVDNational county and districtNA11
Existing reporting channels required for reporting suspected cases of EVDNational county and districtNA12
Case-based reporting forms required by the system for reporting a suspected EVD caseHealth facilityNA11
Existing reporting channels required for reporting suspected cases of EVDHealth facilityNA13
FlexibilitySubsystems with which the EVD system is interoperableNational county and districtTotal number of existing subsystems80%14 (100%)
Changes made to EVD case detection and reportingNational county and districtNA11 (100%)
StabilitySurveillance units reporting unscheduled electrical power outages that occurredNational county and district17 surveillance units017 (100%)
Surveillance units reporting EVD surveillance activities unhindered by lack of fundsNational county and district17 surveillance units100%6 (35.3%)
AcceptabilityStakeholders actively participated in surveillance and response activitiesNational county and districtTotal number of stakeholders required to participate in the system80%85%
RepresentativenessReporting sites that sent weekly surveillance reports (including zero reports) of suspected EVDNational county and districtTotal number of reporting sites observed during the recall period100%15 (100%)
  • EVD, Ebola virus disease; N/A, not applicable (indicators characterised as ‘number’ observed…, eg, number of case-based forms).