Fig. 1

The distribution of sampling sites across three regions in Ethiopia. Each region is represented by a different color and the size of the points corresponds to the number of isolates collected at each location. Larger points indicate a higher number of isolates collected (A). Number of isolates (denoted as Sample Number) collected at each time point in three levels of the dairy supply chain. Different colors represent different levels within the supply chain (B). Maximum-likelihood phylogenetic tree of L. monocytogenes isolates. Each triangle represents a reference genome for a given clade, which was used to identify SNP differences among isolates. The varying numbers of asterisks (*) denote the SNP differences between each isolate and the reference genome or its respective clade. The heatmap provides additional metadata for each isolate (C)