From:  Investigating foodborne pathogen outbreaks: an integrated framework for tracing, detection, and risk assessment in food systems

 Comparison of the integrated framework with existing international guidelines.

Framework featureWHO/FAO Codex guidelinesCDC/EFSA surveillance frameworksThis integrated framework (present review)
Investigative perspectiveClinical/epidemiologicalEpidemiological + limited food tracingFood-system & production-environment-centered; integrates farm-to-fork continuum explicitly
Pathogen detection approachCulture-based reference methodsCulture + selective molecular (PCR, WGS)Tripartite: culture → molecular (PCR/WGS) → foodomics (metagenomics/metabolomics); iterative layers
Source attribution methodologyEpidemiological case linkage; food questionnairesWGS clustering; SNP-based phylogenomicsWGS + metagenomics + supply chain network analysis + GIS spatial tracing; multi-evidence convergence
Risk assessment integrationRetrospective QMRA post-outbreakPost-detection risk profilingDynamic, iterative QMRA embedded throughout investigation; real-time dose–response updating
AI/ML applicationsNot incorporatedEmerging; not systematically integratedExplicitly incorporated: WGS-based source prediction, deep learning for metagenomics, network analysis for supply chains
GIS & spatial epidemiologyOptional; not structuredRecommended for cluster detectionCore structural component: spatial cluster analysis, supply chain geography mapping, contamination front tracking
Resource-limited settings (LMICs)General principles only; no tiered guidanceHigh-income country focusExplicit three-tier adaptive model (foundational/intermediate/advanced) with LMIC-specific implementation guidance
Informal food supply chainsNot addressedNot addressedDedicated section: traditional markets, street food vendors, traceability challenges in unregulated sectors
Novelty basisRegulatory compliance standardSurveillance and WGS integrationFirst framework to explicitly integrate foodomics + AI/ML + GIS + LMIC adaptation + informal supply chains within a single iterative investigation architecture

AI/ML: artificial intelligence and machine learning; GIS: geographic information systems; LMICs: low- and middle-income countries; PCR: polymerase chain reaction; QMRA: quantitative microbial risk assessment; SNP: single-nucleotide polymorphism; WGS: whole-genome sequencing.