Figure 3.
Maximum clade credibility tree of the meticillin-resistant Staphylococcus aureus ST22 population based on BEAST analysis using a strict molecular clock, Gaza, 2009 (n = 59)
MSSA: meticillin-sensitive Staphylococcus aureus.
Molecular clock: 1.48×10−6 substitutions per nucleotide site per year. Tips of the tree are constrained by isolation dates; the time scale is shown below the tree. The coloured tips of the tree indicate the geographical district in which the isolate originated. Dotted lines indicate time of the most recent common ancestor and the intervals indicate the 95% highest posterior density intervals.
