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[Fungemia and other invasive fungal infections in Icelandic children. A nationwide study.].

INTRODUCTION
Invasive fungal infections are increasing in incidence. Among those who are at increased risk of fungal blood stream infections (fungemia) and disseminated fungal infections are premature infants and immunosuppressed children. These infections are associated with high morbidity and mortality. Invasive fungal infections have not yet been studied in Iceland.


MATERIAL AND METHODS
We studied all cases of fungemia and/or disseminated fungal infections in Icelandic children (16 years) during a 20 year period. Histopathology reports and autopsies were reviewed. Information on predisposing factors, symptoms, treatment and outcome was collected. All obtainable fungal blood stream isolates were subcultured and their susceptibility to common antifungals determined.


RESULTS
In the 20 year period from 1980-1999, 19 episodes of invasive fungal infections were diagnosed in 18 infants and children in Iceland. Twelve episodes of fungemia occured in 11 children and the nationwide annual incidence increased from 0.28 to 1.90 cases/100,000/year (p=0.037) during the study period. Half of the children were premature infants. All patients had a central venous catheter at the time of blood culture and most had received intravenous antibiotics or corticosteroids. Candida albicans was the most commonly isolated species (nine of 12 episodes, 75%). In addition to patients with fungemia, three children were diagnosed with disseminated fungal infection by histology or autopsy. Two cases of fungal meningitis, without fungemia, were identified. Furthermore, two children had invasive infections with Aspergillus fumigatus and both patients survived. Three children (3/16; 19%) with invasive Candida-infections died.


CONCLUSIONS
In this study of invasive fungal infections among Icelandic children we demonstrate that the incidence of fungemia has risen significantly in the past 20 years. Diagnosis of invasive fungal infections can be complicated and negative blood cultures do not exclude disseminated infection. Given the high attributable mortality, timely diagnosis and aggressive treatment is extremely important.