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Macrorestriction patterns of 32 Salmonella Infantis isolates obtained with the restriction enzyme XbaI. The dendrogram shows the relationship of different XbaI patterns. Similarity analysis was performed using the Dice coefficient and the clustering was generated by UPGMA. S. Infantis isolates associated with outbreaks or sporadic cases could be assigned to a single combination of phage – and PFGE type (highlighted in grey). * Isolates from broiler chicken carcasses.
