Factors Influencing Non-albicans Candidemia: A Case-Case-Control Study

Area of Science:

• Medical Mycology
• Infectious Diseases
• Clinical Microbiology

Background:

• Candidemia, a serious bloodstream infection, can be caused by Candida albicans or non-albicans Candida species.
• Understanding the distinct risk factors for different Candida species is crucial for effective treatment and prevention.

Purpose of the Study:

• To identify independent risk factors predisposing to non-albicans candidemia compared to Candida albicans candidemia and candidemia-free controls.
• To investigate the specific role of prior antimicrobial treatment in the development of candidemia caused by different Candida species.

Main Methods:

• A retrospective case-case-control study was conducted involving adult patients.
• Three groups were analyzed: non-albicans candidemia (n=58), Candida albicans candidemia (n=48), and controls without candidemia (n=104).
• Multivariate logistic regression was used to identify independent risk factors.

Main Results:

• Prior treatment with quinolones was a significant risk factor for both non-albicans and Candida albicans candidemia.
• Non-albicans candidemia was independently associated with prior use of beta-lactam-beta-lactamase inhibitors and the presence of a central venous catheter.
• Candida albicans candidemia was associated with prior quinolone and carbapenem use, and a history of cardiac disease.

Conclusions:

• Antimicrobial exposure is a significant risk factor for candidemia, with species-specific associations.
• Beta-lactam-beta-lactamase inhibitors are linked to non-albicans candidemia, while carbapenems are linked to Candida albicans candidemia.
• Quinolones are associated with candidemia in general, highlighting the importance of judicious antibiotic use.