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J Antimicrob Chemother. 2003 Oct;52(4):679-82. Epub 2003 Sep 1.

The European Confederation of Medical Mycology (ECMM) survey of candidaemia in Italy: antifungal susceptibility patterns of 261 non-albicans Candida isolates from blood.

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Istituto di Igiene e Medicina Preventiva, Università degli Studi-IRCCS Ospedale Maggiore di Milano, via F Sforza 35, 20122 Milano, Italy.



To analyse the in vitro antifungal susceptibility of 261 non-albicans Candida bloodstream strains isolated during the European Confederation of Medical Mycology survey of candidaemia performed in Lombardia, Italy (September 1997-December 1999).


In vitro susceptibility to flucytosine, fluconazole, itraconazole, posaconazole and voriconazole was determined using the broth microdilution method described in the NCCLS M27-A guidelines. Etest strips were used to assess susceptibility to amphotericin B. In vitro findings were correlated with the patient's underlying condition and previous antifungal treatment.


MICs (mg/L) at which 90% of the strains were inhibited were, respectively, 2 for flucytosine, 8 for fluconazole, 0.5 for itraconazole, 0.25 for voriconazole and 0.25 for posaconazole. Amphotericin B MIC endpoints were <0.50 mg/L in all the isolates tested. Flucytosine resistance was detected in 19 isolates (7%), mainly among Candida tropicalis strains (30%). Innate or secondary fluconazole resistance was detected in 13 strains (5%). Among the 13 patients with fluconazole-resistant Candida bloodstream infection, three were HIV positive, including one treated with fluconazole for oral candidosis; the four who were HIV negative had received the azole during the 2 weeks preceding the candidaemia. Cross-resistance among fluconazole and other azoles was a rare event.


Resistance is still uncommon in non-albicans Candida species recovered from blood cultures. However, in fungaemias caused by C. tropicalis, Candida glabrata and Candida krusei, there is a high prevalence of resistance to fluconazole and flucytosine. Fluconazole resistance should be suspected in patients treated previously with azoles, mainly those with advanced HIV infection.

[Indexed for MEDLINE]

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