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

Diagn Microbiol Infect Dis. 2007 Apr;57(4):399-404. doi: 10.1016/j.diagmicrobio.2006.10.011. Epub 2007 Jan 19.

Abstract

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 guilliermondii (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.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antifungal Agents / pharmacology*
  • Azoles / pharmacology
  • Brazil / epidemiology
  • Candida / classification
  • Candida / drug effects*
  • Candida / isolation & purification*
  • Candidiasis / microbiology
  • Drug Resistance, Fungal
  • Fungemia / microbiology*
  • Hospitals*
  • Humans
  • Microbial Sensitivity Tests

Substances

  • Antifungal Agents
  • Azoles