Antifungal susceptibility of 1000 Candida bloodstream isolates to 5 antifungal drugs: results of a multicenter study conducted in São Paulo, Brazil, 1995-2003

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Matta, Daniel Archimedes da [UNIFESP]
Almeida, Leila Paula de
Machado, Antonia Maria
Azevedo, Ana Carolina
Ura Kusano, Elisa Junko
Travassos, Norma Fracalanza
Salomão, Reinaldo [UNIFESP]
Colombo, Arnaldo Lopes
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We evaluated all Candida sp. bloodstream isolates obtained from patients admitted to 4 tertiary care hospitals between 1995 and 2003 in the city of São Paulo, Brazil. Susceptibility to amphotericin B, 5-fluorocytosine, fluconazole (FCZ), itraconazole (ITZ), and voriconazole (VCZ) was determined using the Clinical Laboratory Standards Institute broth microdilution method. We tested a total of 1000 strains, including 400 strains of Candida albicans (40%), 243 of Candida tropicalis (24.3%), 238 of Candida parapsilosis (23.8%), 44 of C. glabrata (4.4%), 30 of Candida guillierniondii (3%), and 25 of Candida rugosa (2.5%). Only 1.9% of the strains tested were susceptible in a dose-dependent manner, and 0.2% of them were resistant to FCZ. Almost 100% of the strains were susceptible to VCZ. Despite that azole resistance was a rare finding, a trend toward increased resistance among C. rugosa strains to FCZ and ITZ was noted. (c) 2007 Elsevier Inc. All rights reserved.
Diagnostic Microbiology and Infectious Disease. New York: Elsevier B.V., v. 57, n. 4, p. 399-404, 2007.