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Clinical Microbiology Reviews, January 2007, p. 133-163, Vol. 20, No. 1
0893-8512/07/$08.00+0     doi:10.1128/CMR.00029-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Epidemiology of Invasive Candidiasis: a Persistent Public Health Problem

M. A. Pfaller1,3* and D. J. Diekema1,2

Departments of Pathology,1 Medicine, College of Medicine,2 Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa 522423

Invasive candidiasis (IC) is a leading cause of mycosis-associated mortality in the United States. We examined data from the National Center for Health Statistics and reviewed recent literature in order to update the epidemiology of IC. IC-associated mortality has remained stable, at approximately 0.4 deaths per 100,000 population, since 1997, while mortality associated with invasive aspergillosis has continued to decline. Candida albicans remains the predominant cause of IC, accounting for over half of all cases, but Candida glabrata has emerged as the second most common cause of IC in the United States, and several less common Candida species may be emerging, some of which can exhibit resistance to triazoles and/or amphotericin B. Crude and attributable rates of mortality due to IC remain unacceptably high and unchanged for the past 2 decades. Nonpharmacologic preventive strategies should be emphasized, including hand hygiene; appropriate use, placement, and care of central venous catheters; and prudent use of antimicrobial therapy. Given that delays in appropriate antifungal therapy are associated with increased mortality, improved use of early empirical, preemptive, and prophylactic therapies should also help reduce IC-associated mortality. Several studies have now identified important variables that can be used to predict risk of IC and to help guide preventive strategies such as antifungal prophylaxis and early empirical therapy. However, improved non-culture-based diagnostics are needed to expand the potential for preemptive (or early directed) therapy. Further research to improve diagnostic, preventive, and therapeutic strategies is necessary to reduce the considerable morbidity and mortality associated with IC.

* Corresponding author. Mailing address: Medical Microbiology Division, C606 GH, Department of Pathology, University of Iowa College of Medicine, Iowa City, IA 52242. Phone: (319) 356-8615. Fax: (319) 356-4916. E-mail: michael-pfaller{at}uiowa.edu.

Clinical Microbiology Reviews, January 2007, p. 133-163, Vol. 20, No. 1
0893-8512/07/$08.00+0     doi:10.1128/CMR.00029-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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