Nationwide study of candidemia, antifungal use, and antifungal drug resistance in Iceland, 2000 to 2011

J Clin Microbiol. 2013 Mar;51(3):841-8. doi: 10.1128/JCM.02566-12. Epub 2012 Dec 26.

Abstract

Candidemia is often a life-threatening infection, with highly variable incidence among countries. We conducted a nationwide study of candidemia in Iceland from 2000 to 2011, in order to determine recent trends in incidence rates, fungal species distribution, antifungal susceptibility patterns, and concurrent antifungal consumption. A total of 208 infection episodes in 199 patients were identified. The average incidence during the 12 years was 5.7 cases/100,000 population/year, which was significantly higher than that from 1990 to 1999 (4.3/100,000/year; P = 0.02). A significant reduction in the use of blood cultures was noted in the last 3 years of the study, coinciding with the economic crisis in the country (P < 0.001). Age-specific incidence rates were highest among patients at the extremes of age, 20.7/100,000 for <1 year of age and 18.1/100,000 for >60 years, and varied by gender. Age-specific incidence among males >80 years old was 28.6/100,000/year, and it was 8.3/100,000/year for females in this age group (P = 0.028). The 30-day survival rate among adult patients remained unchanged compared to that from 1990 to 1999 (70.4% versus 69.5%, P = 0.97). Candida albicans was the predominant species (56%), followed by C. glabrata (16%) and C. tropicalis (13%). The species distribution remained stable compared to that from previous decades. Fluconazole use increased 2.4-fold from 2000 to 2011, with no increase in resistance. In summary, the incidence of candidemia in Iceland has continued to increase but may have reached a steady state, and no increase in antifungal drug resistance has been noted. Decreased use of blood cultures toward the end of the study may have influenced detection rates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Age Factors
  • Aged
  • Aged, 80 and over
  • Antifungal Agents / pharmacology
  • Antifungal Agents / therapeutic use*
  • Candida / classification*
  • Candida / drug effects*
  • Candida / isolation & purification
  • Candidemia / epidemiology*
  • Candidemia / microbiology*
  • Child
  • Child, Preschool
  • Drug Resistance, Fungal*
  • Drug Utilization / statistics & numerical data
  • Female
  • Humans
  • Iceland / epidemiology
  • Incidence
  • Infant
  • Infant, Newborn
  • Male
  • Middle Aged
  • Sex Factors
  • Young Adult

Substances

  • Antifungal Agents