Journal article
Proximity to human settlement is directly related to carriage of critically important antimicrobial-resistant Escherichia coli and Klebsiella pneumoniae in Silver Gulls
Veterinary microbiology, Vol.280, 109702
2023
PMID: 36848814
Abstract
Human population and activities play an important role in dissemination of antimicrobial resistant bacteria. This study investigated the relationship between carriage rates of critically important antimicrobial-resistant (CIA-R) Escherichia coli and Klebsiella pneumoniae by Silver Gulls and their proximity to human populations. Faecal swabs (n = 229) were collected from Silver Gulls across 10 southern coastline locations in Western Australia (WA) traversing 650 kms. The sampling locations included main town centres and remote areas. Fluoroquinolone and extended-spectrum cephalosporin-resistant E. coli and K. pneumoniae were isolated and tested for antimicrobial sensitivity. Genome sequencing was performed on n = 40 subset out of 98 E. coli and n = 14 subset out of 27 K. pneumoniae isolates to validate phenotypic resistance profiles and determine the molecular characteristics of strains. CIA-R E. coli and K. pneumoniae were detected in 69 (30.1 %) and 20 (8.73 %) of the faecal swabs respectively. Two large urban locations tested positive for CIA-R E. coli (frequency ranging from 34.3 % to 84.3 %), and/or for CIA-R K. pneumoniae (frequency ranging from 12.5 % to 50.0 %). A small number of CIA-R E. coli (3/31, 9.7 %) were identified at a small tourist town, but no CIA-R bacteria were recovered from gulls at remote sites. Commonly detected E. coli sequence types (STs) included ST131 (12.5 %) and ST1193 (10.0 %). Five K. pneumoniae STs were detected which included ST4568, ST6, ST485, ST967 and ST307. Resistance genes including blaCTX-M-3, blaCTX-M-15 and blaCTX-M-27 were identified in both bacterial species. High-level colonisation of CIA-R E. coli and K. pneumoniae in Silver Gulls in and around urban areas compared to remote locations substantiates that anthropogenic activities are strongly associated with acquisition of resistant bacteria by gulls.
Details
- Title
- Proximity to human settlement is directly related to carriage of critically important antimicrobial-resistant Escherichia coli and Klebsiella pneumoniae in Silver Gulls
- Authors/Creators
- Shewli Mukerji - The University of AdelaideShafi Sahibzada - Murdoch UniversityRebecca Abraham - Murdoch UniversityMarc Stegger - Murdoch UniversityDavid Jordan - New South Wales Department of Primary IndustriesDavid J. Hampson - Murdoch UniversityMark O'Dea - Murdoch UniversityTerence Lee - Murdoch UniversitySam Abraham - Murdoch University
- Publication Details
- Veterinary microbiology, Vol.280, 109702
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- Murdoch University University of Adelaide
- Identifiers
- 991005579437507891
- Copyright
- © 2023 Published by Elsevier B.V
- Murdoch Affiliation
- Antimicrobial Resistance and Infectious Disease Laboratory; Centre for Biosecurity and One Health; School of Medical, Molecular and Forensic Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 1 Clinical & Life Sciences
- 1.23 Antibiotics & Antimicrobials
- 1.23.146 Antimicrobial Resistance
- Web Of Science research areas
- Microbiology
- Veterinary Sciences
- ESI research areas
- Plant & Animal Science