Figure 3. Maximum-likelihood phylogeny of 132 sequenced Salmonella enterica serovar Mississippi isolates from Australia and New Zealand and reference isolates, inferred from 8,573 core single-nucleotide polymorphisms. Nodes are labeled with isolation year, isolate source if nonhuman (all from Tasmania), and Australia state of acquisition or residence if human. Tree visualized with iTOL (https://itol.embl.de) and midpoint rooted. Scale bar indicates nucleotide substitutions per site. *State of residence was used instead of state of acquisition because no travel data were available; †investigated as part of an epidemiologic cluster.