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. 2016 Apr 27;214(3):447–453. doi: 10.1093/infdis/jiw166

Figure 2.

Figure 2.

Comparison of the first USA300 isolate from each study case (n = 24, circles) relative to previously published USA300 isolates from the United States (n = 348) [6]. Mid-point rooted maximum likelihood tree based on single-nucleotide polymorphisms (SNPs) in the core genome of methicillin-resistant Staphylococcus aureus with branch colors representing fluoroquinolone genotypes. Red branches: S80F/Y and S84A/L; yellow: S80F only; blue branches: nil; black branch: reference genome FPR3757. Letters alongside circles indicate epidemiologically linked pairs or clusters.