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Eur J Clin Microbiol Infect Dis. 1998 Aug;17(8):573-5.

In vitro efficacy and fungicidal activity of voriconazole against Aspergillus and Fusarium species.

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Department of Medicine, University of Florida, College of Medicine and VA Medical Center, Gainesville 32610, USA.


Twenty-nine Aspergillus isolates and 25 Fusarium isolates underwent in vitro antifungal susceptibility testing by a broth macrodilution procedure adapted from the National Committee for Clinical Laboratory Standards guidelines. The MIC50s of both voriconazole and amphotericin B were 0.5 microg/ml and 1 microg/ml against species of Aspergillus and Fusarium, respectively, while the MIC90s of both agents were 1 and 2 microg/ml. Voriconazole was more active in vitro than amphotericin B: the geometric mean MICs of voriconazole and amphotericin B against Aspergillus spp. were 0.36 microg/ml and 0.64 microg/ml, respectively. Voriconazole also demonstrated fungicidal activity against Aspergillus spp., with 86% (24/29) of isolates exhibiting minimum lethal concentrations of < or = 4 microg/ml.

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