Fig. 4

Phylogeny of representative LTCF ST131 isolates and ST131 isolates from CUH and a national collection. Mid-point rooted maximum likelihood tree of the core genome of 30 ST131 isolates from the LTCF and 221 ST131 isolates associated with bloodstream infection at the nearest acute hospital (CUH) and nationally following removal of MGEs and recombination events. The outer ring shows the origin of each isolate. Black dashed lines highlight three highly related clusters of LTCF and CUH isolates. Filled red triangles indicate nodes with bootstrap values of more than 90%. Coloured branches demonstrate the sub-clade divisions