Figure 1.

Dated phylogenetic tree showing the relationship between all 231 S. aureus genomes. The panel on the right shows a number of properties of the genomes, namely (from left to right) the MLST ST, geographical location of origin (origin), phenotypic resistance status (MRSA, MSSA or loss of resistance during storage) and presence/absence of five genes typically present in SCCmec type II (ccrA, ccrB, mecI, mecR1 and mecA). The five genomes for which phenotypic and genotypic resistance data were discrepant are labelled 1–5. This figure appears in colour in the online version of JAC and in black and white in the print version of JAC.