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Title

Epidemiology and acquisition of extended-spectrum beta-lactamase-producing Enterobacteriaceae in a septic orthopedic ward

Authors
Jourdan, Ghislaine
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Published in SpringerPlus. 2013, vol. 2, no. 1, p. 91
Abstract Wards cohorting infected orthopaedic patients may be particularly prone to transmitting extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-E). We analyze their epidemic pattern by performing molecular typing of ESBL-E isolated from patients and healthcare workers (HCW) from our septic ward. Between March 2010 and November 2011, 186 patients were admitted. Among 565 anal swabs, ESBL-E were detected in 204 samples from 45 patients, suggesting prolonged carriage in affected patients. Among 25 cases with identical ESBL-E species and positive epidemiological links, only 9 were really attributable to our service. We also screened 41 healthcare workers (HCW) on 49 occasions during the study period. Six samples (13%) were positive. None of the ESBL-E detected in HCW were related to any of the patient isolates. Among 60 environmental samples taken at the peak of the epidemic none revealed ESBL-E. We conclude that HCW also were anal carriers of ESBL-E, however the ESBL- strains from the HCW were not the same strains isolated from patients in the septic ward. Moreover, the epidemiological attribution of ESBL by simple vicinity, timing, and species identification might grossly overestimate transmission within a given unit.
Identifiers
PMID: 23539506
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Article (Published version) (177 Kb) - public document Free access
Structures
Research groups Chirurgie orthopédique et traumatologique (98)
Groupe Harbarth Stephan (Staphylocoques dorés résistants à la méthicilline) (866)
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AGOSTINHO, Americo et al. Epidemiology and acquisition of extended-spectrum beta-lactamase-producing Enterobacteriaceae in a septic orthopedic ward. In: SpringerPlus, 2013, vol. 2, n° 1, p. 91. https://archive-ouverte.unige.ch/unige:31114

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Deposited on : 2013-11-19

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