Extended-spectrum β-lactamase producing Escherichia coli in hospital wastewaters and sewage treatment plants in Queensland, Australia

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Extended-spectrum β-lactamase producing Escherichia coli in hospital wastewaters and sewage treatment plants in Queensland, Australia

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Title: Extended-spectrum β-lactamase producing Escherichia coli in hospital wastewaters and sewage treatment plants in Queensland, Australia
Author/Creator: Gundogdu, A | Jennison, Amy V | Smith, Helen V | Stratton, Helen | Katouli, M
Description: We investigated the prevalence of extended spectrum -lactamase (ESBL) producing Escherichia coli in untreated hospital wastewaters and two sewage treatment plants (STPs). A collection of 252 ESBL-producing E. coli isolates from hospital wastewater and STPs were typed and tested for resistance to 17 antimicrobial agents, the presence of integron-associated integrases (intI gene) and ESBL genes. Eighty nine percent (n=176) of the ESBL-producing E. coli strains from hospital waste water were found in more than one sample (common types) with one common type accounting for 35% of isolates, found in all samples. These strains were also resistant to up to 9 non-beta-lactam antibiotics and showed the same pattern of resistance in all samples. More than 73% of the hospital wastewater isolates possessed SHV-type ESBL as opposed to isolates from STPs that carried only CTX-M-type ESBL-genes. The prevalence of intI gene did not differ between isolates from these sources. Certain ESBL-producing E. coli were dominant in hospital wastewaters. These strains possessed -lactamase genes that were different from isolates found in STPs. From a public health point of view, the presence of such a high level of ESBL-producing E. coli strains in hospital wastewaters is of great importance.
Relation: Canadian Journal of Microbiology / Vol. 59, No. 11, pp.737-745
Relation: http://dx.doi.org/10.1139/cjm-2013-0515
Year: 2013
Publisher: N R C Research Press
Subject: FoR 1108 (Medical Microbiology) | sewage treatment plant | Escherichia coli | hospital wastewater | antibiotic-resistant bacteria

Collection(s): Research Publications
Resource Type: Journal Article
Identifier: ISSN: 0008-4166
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USC Research Bank - University of the Sunshine Coast, Queensland, Australia