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Genomic tree and divergence based on 503 Y. pestis Genome Assembly and Annotation reports (https://www.ncbi.nlm.nih.gov/genome/browse/#!/prokaryotes/153/). Both the modern and ancestral phylogenetic groups are indicated. The tree was adapted from Achtman [132] and Rascovan et al. [133]. The relationship between subspecies, biovars, and SNP types is shown by Kislichkina [134].
