A Comparison of Molecular Typing Methods Applied to Enterobacter cloacae complex: hsp60 Sequencing, Rep-PCR, and MLST

Roberto Viau, Lee M. Kiedrowski, Barry N. Kreiswirth, Mark Adams, Federico Perez, Dror Marchaim, Dubert M. Guerrero, Keith S. Kaye, Latania K. Logan, Maria Virginia Villegas, Robert A. Bonomo

Abstract


Molecular typing using repetitive sequenced-based PCR (rep-PCR) and hsp60 sequencing were applied to a collection of diverse Enterobacter cloacae complex isolates. To determine the most practical method for reference laboratories, we analyzed 71 E. cloacae complex isolates from sporadic and outbreak occurrences originating from 4 geographic areas. While rep-PCR was more discriminating, hsp60 sequencing provided a broader and a more objective geographical tracking method similar to multilocus sequence typing (MLST). In addition, we suggest that MLST may have higher discriminative power compared to hsp60 sequencing, although rep-PCR remains the most discriminative method for local outbreak investigations. In addition, rep-PCR can be an effective and inexpensive method for local outbreak investigation.


Keywords


Enterobacter cloacae; Bacterial Typing Technique; Molecular Epidemiology; Molecular typing; DNA fingerprinting

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References


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