Comparison of Sensititre YeastOne with the NCCLS M38-A microdilution method to determine the activity of amphotericin B, voriconazole, and itraconazole against clinical isolates of Aspergillus fumigatus

Jesús Guinea, Teresa Peláez, Luis Alcalá, Emilio Bouza
Diagnostic Microbiology and Infectious Disease 2006, 56 (1): 53-5
The in vitro activities of amphotericin B, itraconazole, and voriconazole against 279 clinical isolates of Aspergillus fumigatus were studied by comparing Sensititre YeastOne with the reference method NCCLS (CLSI) M38-A. The methods were considered to agree when the results of the MICs by Sensititre were within 2 dilutions of the MICs obtained by NCCLS M38-A. Agreement of readings at 24, 48, and 72 h was as follows: amphotericin B (0%, 31.5%, 82.1%), itraconazole (86.7%, 98.3%, 98.2%), and voriconazole (92.8%, 98.3%, 98.9%). Sensititre YeastOne is a suitable alternative for the determination of the MICs of itraconazole and voriconazole against A. fumigatus when results are read at 48 h of incubation.

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