Figure 1

The twelve canSNP subgroups and sub-lineages of B. anthracis. Determined by the analysis of 14 canSNP sites described by Van Ert et al[5]. The five canSNP groups represented in China are indicated in larger and bold fonts in this Neighbor Joining Tree. The number of isolates (N), genotypes (G), and Nei's Diversity Index [8] within groups (D) are illustrated in the table in the lower left. Neighbor-joining trees based upon additional MLVA genotypes within each of these 5 canSNP groups are illustrated in Figures 3 and 5.