Figure 1

Phylogenetic tree of 64 Salmonella ser. Enteritidis isolates. Using core SNPs determined by FDA CFSAN SNP pipeline, the tree was constructed using the GTR-CAI model of FASTree 2. The analysis involved 552–565 total SNP positions. Clades and subclades are indicated in colors (A, blue; and B, red) with numbers of total isolates in each clade or subclade in parentheses. Isolates sourced from chicken samples were highlighted under red line, the rest were from egg samples.