ArticleMicrobiologyOpen2024
Multidrug-resistant Stenotrophomonas maltophilia in residential aged care facilities: An emerging threat.
Article in MicrobiologyOpen, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Isolation and characterisation of a novel Stenotrophomonas maltophilia phage vB_SmaS_BCU-1 with evaluation of mammalian cell safety.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Article
- Exploring the Effectiveness of Imipenem/Relebactam in Patients with Antimicrobial-Resistant Hospital-Acquired Infections: Findings from Systematic Literature Reviews.Antibiotics (Basel, Switzerland) · 2026Review
- A novel self-transmissible mega plasmid from extensively drug-resistantCurrent research in microbial sciences · 2026Article
- Genotypic and Phenotypic Characterization of MRSA Colonization and Persistence in Residential Aged Care Facilities in Adelaide, Australia.International journal of microbiology · 2026Article
- The continued evolution of the L2 cephalosporinase in Stenotrophomonas maltophilia: a key driver of beta-lactam resistance.The Biochemical journal · 2025Article
- Multicenter epidemiology ofFrontiers in microbiology · 2025Article
- Multidrug-resistant Stenotrophomonas maltophilia in residential aged care facilities: An emerging threat.MicrobiologyOpen · 2024Article
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Authors and funding
6 authors.
Funding
Abstract
Stenotrophomonas maltophilia is a multidrug-resistant (MDR), Gram-negative bacterium intrinsically resistant to beta-lactams, including last-resort carbapenems. As an opportunistic pathogen, it can cause serious healthcare-related infections. This study assesses the prevalence, resistance profiles, and genetic diversity of S. maltophilia isolated from residential aged care facilities (RACFs). RACFs are known for their overuse and often inappropriate use of antibiotics, creating a strong selective environment that favors the development of bacterial resistance. The study was conducted on 73 S. maltophilia isolates recovered from wastewater and facility swab samples obtained from three RACFs and a retirement village. Phenotypic and genotypic assessments of the isolates revealed high carbapenem resistance, exemplifying their intrinsic beta-lactam resistance. Alarmingly, 49.3% (36/73) of the isolates were non-wild type for colistin, with minimum inhibitory concentration values of > 4 mg/L, and 11.0% (8/73) were resistant to trimethoprim-sulfamethoxazole. No resistance mechanisms were detected for either antimicrobial. Genotypic assessment of known lineages revealed isolates clustering with Sm17 and Sm18, lineages not previously reported in Australia, suggesting the potential ongoing spread of MDR S. maltophilia. Lastly, although only a few isolates were biocide tolerant (2.7%, 2/73), their ability to grow in high concentrations (64 mg/L) of triclosan is concerning, as it may be selecting for their survival and continued dissemination.
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