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Azole-resistant Candida blankii as a newly recognized cause of bloodstream infection.

ABSTRACT: Candida blankii is a newly recognized human pathogen. Here we describe a case of bloodstream infection in a preterm neonate. The yeast was repeatedly isolated from blood, and its identity was confirmed by PCR sequencing of rDNA. Additionally, C. blankii DNA was detected directly in a blood sample. The isolates initially developed pink colonies on CHROMagar Candida which later turned into dark metallic blue similar to Candida tropicalis. Inaccurate identification by the VITEK 2 yeast identification system as Stephanoascus ciferrii and intrinsic resistance to fluconazole (MIC 12-16 ?g/mL) underscore the need for its accurate identification for appropriate therapeutic management.

SUBMITTER: Al-Haqqan A

PROVIDER: S-EPMC6141729 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Azole-resistant Candida blankii as a newly recognized cause of bloodstream infection.

Al-Haqqan A A Al-Sweih N N Ahmad S S Khan S S Joseph L L Varghese S S Khan Z Z

New microbes and new infections 20180623

Candida blankii is a newly recognized human pathogen. Here we describe a case of bloodstream infection in a preterm neonate. The yeast was repeatedly isolated from blood, and its identity was confirmed by PCR sequencing of rDNA. Additionally, C. blankii DNA was detected directly in a blood sample. The isolates initially developed pink colonies on CHROMagar Candida which later turned into dark metallic blue similar to Candida tropicalis. Inaccurate identification by the VITEK ...[more]

PMID: 30245830

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Project description:BackgroundThe incidence of polymicrobial bloodstream infections is increasing, the clinical characteristics of polymicrobial Acinetobacter baumannii bloodstream infections (AB-BSI) are unclear, and there are no reports of polymicrobial AB-BSI in mainland China. Therefore, our objective was to identify the clinical characteristics, risk factors, and outcomes of polymicrobial AB-BSI versus monomicrobial AB-BSI.MethodsA retrospective survey of all patients with AB-BSI from January 1, 2015, to December 31, 2019, and their clinical data were collected and analyzed by reviewing electronic medical records. All data were compared and analyzed between groups of monomicrobial and polymicrobial AB-BSI. Risk factors for polymicrobial AB-BSI were assessed using multivariable logistic regression analysis.ResultsA total of 204 patients were included, of which 39 (19.1%) were patients with polymicrobial AB-BSI. The main sources of the pathogenicity of polymicrobial Acinetobacter baumannii bloodstream infections were skin and soft tissue (38.5% vs. 16.4%, p=0.002). Resistance to piperacillin/tazobactam as an independent factor for polymicrobial AB-BSI was found in multivariate analysis. Patients with polymicrobial AB-BSI had longer hospital stays compared to those with monomicrobial AB-BSI. However, there was no significant difference in mortality between the two groups.ConclusionsPolymicrobial AB-BSI accounted for a significant proportion among all AB-BSI, and it did not influence mortality but was related to slightly longer total hospital stays. Multidrug resistance was associated with the development of polymicrobial AB-BSI but does not directly lead to polymicrobial AB-BSI, whereas resistance to piperacillin/tazobactam was highly correlated with polymicrobial AB-BSI. Therefore, while treating A. baumannii bloodstream infections, clinicians cannot ignore the multidrug-resistant A. baumannii, especially piperacillin/tazobactam-resistant A. baumannii, which may predispose to the development of polymicrobial AB-BSI.

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Azole-resistant Candida blankii as a newly recognized cause of bloodstream infection.

Publications

Azole-resistant <i>Candida blankii</i> as a newly recognized cause of bloodstream infection.

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