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cgMLST-based Minimum Spanning Tree of 36 S. Typhimurium isolates of the 2019 infection cluster. Isolates with an identical IncHI2 plasmid structure are shown in purple, IncHI2 plasmid variants with the additional IS element in orange and the isolate with the unique IncI1 plasmid in green. Only the four representative isolates are highlighted with strain numbers.
