Analysis of the Relationship Between Fluconazole Consumption and non-C. Albicans Candida Infections

Med Mycol. 2014 Oct;52(7):758-65. doi: 10.1093/mmy/myu053. Epub 2014 Sep 3.

Abstract

The effect of fluconazole consumption on the incidence of nosocomial non-C. albicans Candida infections remains unclear. In this study we investigated such a relationship in an intensive care unit (Poland) over an 11-year period (2002-2012). Statistics relating to the number of candidiasis cases and the number of defined daily doses of fluconazole showed that only a very weak and not statistically significant linear correlation existed between these two variables (r(2) = 0.36, P = 0.052). However, the assumption of a 1-year delay in the infection response to changes in fluconazole concentrations resulted in a strong and statistically significant linear correlation (r(2) = 0.64, P = 0.0053). To more accurately determine the nature of this relationship, a simple epidemiological model was proposed that provided a better than linear correlation (r(2) = 0.78, P = 0.00077). We successfully used this approach to analyze results from the literature that were interpreted as evidence that fluconazole use is not a risk factor for development of non-C. albicans Candida infections. If a time delay in the infection response was assumed, a strong and statistically significant correlation was obtained. These findings suggest the need for a closer look at fluconazole therapy as a possible risk factor for development of non-C. albicans Candida infections.

Keywords: Candida albicans; fluconazole; non–C. albicans Candida; nosocomial candidiasis.

MeSH terms

  • Adult
  • Candida / classification*
  • Candida / isolation & purification*
  • Candidiasis / epidemiology*
  • Candidiasis / microbiology
  • Cross Infection / epidemiology*
  • Cross Infection / microbiology*
  • Drug Utilization / statistics & numerical data*
  • Fluconazole / therapeutic use*
  • Humans
  • Incidence
  • Intensive Care Units
  • Models, Statistical
  • Poland / epidemiology
  • Risk Factors

Substances

  • Fluconazole