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  • Antimicrobial resistance and genomic screening of clinical isolates of thermophilic Campylobacter spp. from south-east Queensland, Australia

    Author(s)
    Alfredson, DA
    Akhurst, RJ
    Korolik, V
    Griffith University Author(s)
    Korolik, Victoria
    Year published
    2003
    Metadata
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    Abstract
    Aim: To screen 90 clinical isolates of thermophilic Campylobacter species for putative resistance to ampicillin, erythromycin and tetracycline and perform numerical analysis to determine isolate relatedness. Methods and Results: Disc diffusion, E-test MIC and agar dilution methods were performed. Disc diffusion testing showed 87 (97%) isolates appeared resistant to ampicillin at 10 姻 14 (16%) resistant to tetracycline at 30 姻 and three (3紥) resistant to erythromycin at 15 姮 E-test MICs showed a range of 0絠to >256 mg l1 for ampicillin; 16 to >256 mg l1 for tetracycline; and >256 mg l1 for erythromycin. E-test showed 68% ...
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    Aim: To screen 90 clinical isolates of thermophilic Campylobacter species for putative resistance to ampicillin, erythromycin and tetracycline and perform numerical analysis to determine isolate relatedness. Methods and Results: Disc diffusion, E-test MIC and agar dilution methods were performed. Disc diffusion testing showed 87 (97%) isolates appeared resistant to ampicillin at 10 姻 14 (16%) resistant to tetracycline at 30 姻 and three (3紥) resistant to erythromycin at 15 姮 E-test MICs showed a range of 0絠to >256 mg l1 for ampicillin; 16 to >256 mg l1 for tetracycline; and >256 mg l1 for erythromycin. E-test showed 68% correlation (ᱠlog2 dilution) with agar dilution for ampicillin, 100% for erythromycin and 64% for tetracycline. Disc diffusion testing showed 100% correlation with agar dilution for erythromycin and tetracycline, and 77% for ampicillin. Numerical analyses of restriction endonuclease (RE) fragment profiles suggested a high level of isolate variation. Conclusion: The incidence of resistance of thermophilic Campylobacter spp. to erythromycin and tetracycline is low in south-east Queensland. Significance and Impact of the Study: Disc diffusion susceptibility testing may be used to screen thermophilic Campylobacter spp. for putative resistance to erythromycin and tetracycline. Agar dilution should be used to determine ampicillin susceptibility.
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    Journal Title
    Journal of Applied Microbiology
    Volume
    94
    Publisher URI
    http://www.blackwell-synergy.com/doi/full/10.1046/j.1365-2672.2003.01856.x
    DOI
    https://doi.org/10.1046/j.1365-2672.2003.01856.x
    Copyright Statement
    © 2003 Blackwell Publishing. The definitive version is available at [www.blackwell-synergy.com.]
    Publication URI
    http://hdl.handle.net/10072/6232
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