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Journal article
Australian Group on Antimicrobial Resistance (AGAR) Australian Gram-negative Surveillance Outcome Program (GnSOP) Bloodstream Infection Annual Report 2023
Communicable diseases intelligence (2018), Vol.49, pp.1-15
2025
Abstract
The Australian Group on Antimicrobial Resistance (AGAR) performs regular period-prevalence studies to monitor changes in antimicrobial resistance in selected enteric gram-negative pathogens. From 1 January 2023 to 31 December 2023, a total of 57 hospitals across Australia participated in the Australian Gram-negative Surveillance Outcome Program (GnSOP).
The 2023 survey tested 10,453 isolates, comprising Enterobacterales (9,503; 90.9%), P. aeruginosa (806; 7.7%) and Acinetobacter species (144; 1.4%), using commercial automated methods. The results were analysed using European Committee on Antimicrobial Susceptibility Testing (EUCAST) breakpoints (January 2024). Key resistances reported are to the third-generation cephalosporin ceftriaxone in 12.9% of Escherichia coli and in 6.9% of Klebsiella pneumoniae complex isolates. Resistance rates to ciprofloxacin were 14.5% for E. coli; 7.8% for the K. pneumoniae complex; 3.2% for the Enterobacter cloacae complex; and 7.6% for P. aeruginosa. Resistance rates to piperacillin-tazobactam were 6.0%; 9.4%; 23.3%; and 13.7% for the same four species/complexes, respectively. Thirty Enterobacterales isolates from 30 patients were shown to harbour a carbapenemase gene: ten with a blaNDM gene (blaNDM-1 [4], blaNDM-5 [4], blaNDM-7 [2]); nine with a blaOXA-48-like gene (blaOXA-244 [4], blaOXA-48 [2], blaOXA-181 [1], blaOXA-232 [1], blaOXA-484 [1]); eight with blaIMP-4; two with blaNDM-5 + a blaOXA-181-like gene; and one with blaKPC-2 + blaNDM-5 + blaOXA-181. Transmissible carbapenemase genes were also detected in two Acinetobacter baumannii complex isolates (blaOXA-23; blaOXA-23 + blaOXA-58 + blaIMP-4) and one P. aeruginosa (blaIMP-4).
Details
- Title
- Australian Group on Antimicrobial Resistance (AGAR) Australian Gram-negative Surveillance Outcome Program (GnSOP) Bloodstream Infection Annual Report 2023
- Authors/Creators
- Jan M BellAlicia Fajardo LubianSally R Partridge - The University of SydneyThomas Gottlieb - The University of SydneyJennifer Robson - Sullivan Nicolaides PathologyJonathan R Iredell - The University of SydneyDenise A Daley - Fiona Stanley HospitalGeoffrey W Coombs - Murdoch University
- Publication Details
- Communicable diseases intelligence (2018), Vol.49, pp.1-15
- Publisher
- Australian Govt. Department of Health and Aged Care
- Number of pages
- 15
- Grant note
- Australian Government Department of Health and Aged Care
This study was funded by the Australian Government Department of Health and Aged Care.
- Identifiers
- 991005742450907891
- Copyright
- © 2025 Commonwealth of Australia as represented by the Department of Health and Aged Care
- Murdoch Affiliation
- Centre for Biosecurity and One Health
- Language
- English
- Resource Type
- Journal article
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