Abstract
In France, onychomycoses represent about 30% of superficial mycoses seen by the dermatologists. In recent years, it is observed an increased number of mycoses due to non-dermatophytic molds. The purpose of this study was to evaluate the epidemiological profile of identified superficial fungal infections in the Laboratory of Parasitology-Mycology of the University Hospital of Nice over a two-year period. A retrospective study was performed from the nail, skin and scalp samples of patients analyzed from January 2018 to December 2019. In this study, 3074 samples (54.2% nails, 39.7% skin and 6.1% scalp) were analyzed representing 1922 patients. Among them, 809 (42.1%) patients were sampled by dermatologists and 1113 (57.9%) were sampled by our experts in the clinical unit of the University Hospital of Nice. In total, 1159 (37.7%) samples had a positive culture (1195 strains identified) including 712 (59.6%) dermatophytes, 345 (28.9%) yeasts and 138 (11.5%) other filamentous molds. Trichophyton rubrum was the main dermatophyte (563; 47.1%) followed by T. interdigitale (84; 7.0%) and T. soudanense (25; 2.1%). Yeasts were mostly represented by Candida albicans (155; 13.0%). Among the other molds, Fusarium sp. was the most isolated (61; 5.1%). Dermatophytes stay predominant in superficial fungal infections where the anthropophilic species T. rubrum was found in almost half of the positive cultures. Interestingly, molds represented an important part of infections in our population. This study highlights the increasing share of Fusarium sp. superficial fungal infection in our patients' populations, perhaps requiring a major therapeutic adaptation in the years to come.
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