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Table 3 Contact tracing monitoring and evaluation through a proposal framework of Key Performance Indicators (KPIs)

From: SARS-CoV-2 Catalonia contact tracing program: evaluation of key performance indicators

High risk transmission
Mitigation strategy
Low-moderate risk transmission
Maintenance - suppression strategy
Incidence > 3000 cases/day (> 40 cases/100,000 inhab./day) Incidence < 3000 cases/day (< 15/30 cases/100,000 inhab./day)
Minimal set of CT KPIs (daily). Additional to the KPI1,2,3,4. All previous CT KPIs plus the following (daily)
1. Time from case symptoms onset to diagnosis
2. Time from case diagnosis to case interview and contact quarantine
3. CC per case (median, IQR, minimum, maximum), disaggregate by risk category and settings
4. % of CC confirmed as new SARS-CoV-2 infection
1. % of cases with no CC to declare
2. % of tested CC for SARS-CoV-2
3. % of traced CC adherent to quarantine measures
4. % of vaccinated CC
Prioritize backward CT and test only high-risk CC (cluster scoring), prioritise CC interview and follow up if < 7 days from last exposure to the case. Set up forward CT and initiate universal CC testing (additionally to all previous)
  1. Legend: percentage (%), informed case (IC), close contact (CC), inhabitants (inhab.), interquartil range (IQR), key performance indicator (KPI), contact tracing (CT)
  2. Disaggregate KPI results by the following variables: geographically (regional epidemiological surveillance unit), sociodemographic (gender and age), exposure setting, CC symptom onset, type of COVID-19-like symptom, tracing incidence, contact media, vaccination status, day of follow-up