Multilocus sequence typing of hospital-associated Enterococcus faecium from Brazil reveals their unique evolutionary history.
作者： Ricardo Titze-De-Almeida , Alex Van Belkum , Maria Sueli Soares Felipe , Rosemeire C. Zanella , Janetta Top
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摘要: We studied the genetic relationships between vancomycin-susceptible (n = 11) and -resistant Enterococcus faecium (VRE, n 20) recovered from Brazil using a multilocus sequence typing (MLST) scheme. Grouping of allelic profiles revealed six clusters related types (STs) that differ in no more than two seven alleles. Of these, one cluster harbored 16 20 isolates during first VRE outbreak Brazil. The ampicillin gentamicin resistance were stable clustered within groups I-III. Comparison with 139 E. different geographical regions origins found international database http://www.mlst.net Brazilian clone did not previously named complex-17. This complex contains hospital epidemic clinical countries continents. Twenty 31 isolates, including clone, apart database, suggesting these have distinct evolutionary history.
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