Comparison of the integrated framework with existing international guidelines.
| Framework feature | WHO/FAO Codex guidelines | CDC/EFSA surveillance frameworks | This integrated framework (present review) |
|---|---|---|---|
| Investigative perspective | Clinical/epidemiological | Epidemiological + limited food tracing | Food-system & production-environment-centered; integrates farm-to-fork continuum explicitly |
| Pathogen detection approach | Culture-based reference methods | Culture + selective molecular (PCR, WGS) | Tripartite: culture → molecular (PCR/WGS) → foodomics (metagenomics/metabolomics); iterative layers |
| Source attribution methodology | Epidemiological case linkage; food questionnaires | WGS clustering; SNP-based phylogenomics | WGS + metagenomics + supply chain network analysis + GIS spatial tracing; multi-evidence convergence |
| Risk assessment integration | Retrospective QMRA post-outbreak | Post-detection risk profiling | Dynamic, iterative QMRA embedded throughout investigation; real-time dose–response updating |
| AI/ML applications | Not incorporated | Emerging; not systematically integrated | Explicitly incorporated: WGS-based source prediction, deep learning for metagenomics, network analysis for supply chains |
| GIS & spatial epidemiology | Optional; not structured | Recommended for cluster detection | Core structural component: spatial cluster analysis, supply chain geography mapping, contamination front tracking |
| Resource-limited settings (LMICs) | General principles only; no tiered guidance | High-income country focus | Explicit three-tier adaptive model (foundational/intermediate/advanced) with LMIC-specific implementation guidance |
| Informal food supply chains | Not addressed | Not addressed | Dedicated section: traditional markets, street food vendors, traceability challenges in unregulated sectors |
| Novelty basis | Regulatory compliance standard | Surveillance and WGS integration | First 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.