Fig. 1.

Maximum-likelihood phylogenetic tree for the 162 samples with full datasets. Samples labelled in blue are carriage strains from rural Ba Vi and in green are from urban Dong Da; samples labelled in red are invasive hospital strains. An asterisk indicates meticillin resistance and # indicates presence of PVL. Numbers to the right of the vertical black bars indicate clonal complex designation. Numbers along the branches indicate branch support based on 100 bootstrap replicates. Bar, 0.1 % total sequence divergence.