BatchZero Uses FalkorDB Graph Traversal to Resolve a Tied Outbreak Source

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An investigation into an outbreak of eleven illnesses found two ingredients shared by every case and two suppliers tied on exposure counts, so case data alone could not identify the source. The developers built BatchZero, a graph-based investigator using FalkorDB, to link cases, exposures, menu items, ingredients, lots, suppliers, and shipments. Genomic isolate matching provided independent evidence that favored one lot, MG-4417, while refuting the competing lettuce lot. The system also flagged an exposure record dated after symptom onset and excluded it as outside the incubation window. The project, which uses fictional outbreak data for demonstration, separates four agent roles through MCP servers to enforce workflow limits.

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