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Evaluation of Etest and disk diffusion methods compared with broth microdilution antifungal susceptibility testing of clinical isolates of Candida spp. against posaconazole
Journal article   Open access   Peer reviewed

Evaluation of Etest and disk diffusion methods compared with broth microdilution antifungal susceptibility testing of clinical isolates of Candida spp. against posaconazole

Daniel J Diekema, Shawn A Messer, Richard J Hollis, Linda B Boyken, Shailesh Tendolkar, Jennifer Kroeger and Michael A Pfaller
Journal of clinical microbiology, Vol.45(6), pp.1974-1977
06/2007
DOI: 10.1128/JCM.02087-06
PMCID: PMC1933029
PMID: 17301284
url
https://doi.org/10.1128/JCM.02087-06View
Published (Version of record) Open Access

Abstract

We performed Etest, disk diffusion, and broth microdilution susceptibility testing of 2,171 clinical isolates of Candida spp. against posaconazole. By using provisional breakpoints for comparison purposes only, the categorical agreement between the agar-based methods and broth microdilution results ranged from 93 to 98%, with <1% very major errors. The essential agreement (within 2 well dilutions) between the Etest and broth microdilution methods was 94%. These agar-based methods hold promise as simple and reliable methods for determination of the posaconzole susceptibilities of Candida spp.
Antifungal Agents - pharmacology Disk Diffusion Antimicrobial Tests - standards Disk Diffusion Antimicrobial Tests - methods Humans Agar Candidiasis - microbiology Candida - isolation & purification Triazoles - pharmacology Candida - classification Microbial Sensitivity Tests - standards Culture Media Candida - drug effects Microbial Sensitivity Tests - methods

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