General hospital outbreak of invasive candidiasis due to azole-resistant Candida parapsilosis associated with an Erg11 Y132F mutation

Dora E. Corzo-Leon*, Mark Peacock, Patricia Rodriguez-Zulueta, Grace J. Salazar-Tamayo, Donna M. MacCallum

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

An increasing number of outbreaks due to resistant non-albicans Candida species have been reported worldwide. Between 2014 and 2016, Candida isolates causing invasive candidiasis were recovered in a Mexican hospital. Isolates were identified to species level and antifungal susceptibility was determined. In the time period studied, 74 invasive candidiasis cases were identified, with 38% (28/74) caused by Candida parapsilosis, out of which 54% (15/28) were fluconazole resistant. The ERG11 gene was sequenced for 12 recoverable fluconazole-resistant C. parapsilosis isolates and SNPs identified. The 12 isolates had one common silent point mutation in ERG11 (T591C) and seven isolates had an additional (A395T) mutation, which corresponded to Y132F. Four of the isolates carrying this mutation were closely related within the same cluster by microsatellite typing. This is the first report of an invasive candidiasis outbreak in Mexico due to azole-resistant C. parapsilosis associated with the Y132F substitution.

Original languageEnglish
Pages (from-to)664-671
Number of pages8
JournalMedical Mycology
Volume59
Issue number7
Early online date10 Dec 2020
DOIs
Publication statusPublished - 1 Jul 2021

Keywords

  • Candida parapsilosis
  • ERG11
  • Y132F
  • outbreak
  • Mexico

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