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

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.
AuthorsDora E Corzo-Leon, Mark Peacock, Patricia Rodriguez-Zulueta, Grace J Salazar-Tamayo, Donna M MacCallum
JournalMedical mycology (Med Mycol) Vol. 59 Issue 7 Pg. 664-671 (Jul 06 2021) ISSN: 1460-2709 [Electronic] England
PMID33305313 (Publication Type: Journal Article, Observational Study)
Copyright© The Author(s) 2020. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.
Chemical References
  • Antifungal Agents
  • Azoles
  • Fungal Proteins
Topics
  • Adult
  • Amino Acid Substitution
  • Antifungal Agents (pharmacology)
  • Azoles (pharmacology)
  • Candida parapsilosis (drug effects, genetics)
  • Candidiasis, Invasive (epidemiology)
  • Disease Outbreaks (statistics & numerical data)
  • Drug Resistance, Fungal
  • Female
  • Fungal Proteins (genetics)
  • Hospitals, General (statistics & numerical data)
  • Humans
  • Male
  • Mexico
  • Microbial Sensitivity Tests
  • Middle Aged
  • Mutation (drug effects, genetics)
  • Retrospective Studies

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