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AFLP dendrogram of 102 isolates produced following Pearson and UPGMA analysis. Three AFLP groups (I to III) comprising at least three isolates were formed at ≥80% similarity. Distribution of the isolates according to hospital site (hospital codes refer to the 10 hospitals that participated), esp positivity, year of isolation, source of isolation, purK and pbp5 alleles, ampicillin susceptibility, and PFGE group I are shown.
