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Neonatal Meningitis and Septicemia Caused by Multidrug-Resistant Elizabethkingia anophelis Identified by 16s Ribosomal RNA: An Emerging Threat.

ABSTRACT: Elizabethkingia anophelis infections are emerging, especially among premature newborns, immunocompromised, and critically ill patients. The importance of correctly identifying this Gram-negative organism lies in the fact that it is associated with fatal complications such as meningitis, acute pulmonary edema, congestive cardiac failure, septic shock, and death. In addition, it is inherently resistant to multiple antibiotics which are used to treat Gram-negative bacilli. Here, we report a case of E. anophelis related meningitis and septicemia in a preterm neonate along with a brief review of literature.

SUBMITTER: Baruah FK

PROVIDER: S-EPMC8045540 | biostudies-literature | 2020 Oct-Dec

REPOSITORIES: biostudies-literature

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Neonatal Meningitis and Septicemia Caused by Multidrug-Resistant <i>Elizabethkingia anophelis</i> Identified by 16s Ribosomal RNA: An Emerging Threat.

Baruah Frincy K FK Borkakoty Biswajyoti B Ahmed Abid A Bora Prakritish P

Journal of global infectious diseases 20201001 4

<i>Elizabethkingia anophelis</i> infections are emerging, especially among premature newborns, immunocompromised, and critically ill patients. The importance of correctly identifying this Gram-negative organism lies in the fact that it is associated with fatal complications such as meningitis, acute pulmonary edema, congestive cardiac failure, septic shock, and death. In addition, it is inherently resistant to multiple antibiotics which are used to treat Gram-negative bacilli. Here, we report a ...[more]

PMID: 33888964

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Project description:The incidence of Elizabethkingia anophelis bacteremia increased significantly in a tertiary hospital, Changhua Christian Hospital (CCH) since 2013. The infection density was 1.3 and 8.1 cases per 100,000 patient-days between 2005 and 2012 and 2013 and 2020, respectively (P < 0.05). During an outbreak investigation, a specific lineage of E. anophelis strains was identified by the pulsed-field gel electrophoresis analysis. To evaluate the evolution of the specific E. anophelis lineage, whole-genome sequencing was performed, and unique genomic features (GRs) were determined by comparative genomic analysis. The specific E. anophelis lineage was novel compared to worldwide strains ever reported by cg-MLST phylogenic and whole-genome comparative analysis. Multiplex PCR using primers designed from unique GRs were performed for prevalence screening among isolates from the CCH and nationwide isolates from the Taiwan surveillance of Antimicrobial Resistance (TSAR) Program. The proportion of the specific E. anophelis lineage increased from 7.9% (3/38) during 2005-2012 to 89.2% (223/250) during 2013-2020 (P < 0.05). Although E. anophelis usually confers resistance to multiple antibiotics with limited therapeutic options, the E. anophelis strains in the specific lineage had higher ciprofloxacin resistance (100% [226/226] versus 27.4% [17/62], P < 0.05) and was associated with a higher 14-day mortality rates (33.2% [37/226] versus 16.1% [10/62], P < 0.05) than other strains at CCH. A similarly increasing trend was also found in the national TSAR program during 2002-2018 (p for trend <0.05). We concluded that a novel lineage of E. anophelis strains has emerged dominantly in Taiwan. The genomic features are important for further investigations of epidemiology, resistance, virulence, and appropriate treatment. IMPORTANCE Elizabethkingia anophelis is an emerging multidrug resistant pathogen caused several global outbreaks recently. E. anophelis was frequently misidentified as E. meningoseptica in the past by conventional culture methods; therefore, the prevalence was often underestimated. Through revised identification, an increasing trend of E. anophelis infection was noted in a tertiary hospital and a dominant lineage of strains was recognized by genotyping. To our best knowledge, the dominant lineage of E. anophelis is novel in comparison to other worldwide strains by whole-genome comparative analysis and several unique genomic regions were found. The whole-genome sequencing data also demonstrated multiple putative virulence factors and genes associated with multidrug resistance. In our study, we identified a specially evolved E. anophelis in Taiwan with increasing nationwide dominance. This study will assist in further epidemiology surveillance and developing corresponsive infection control policies to restrain it potential of global dissemination.

Dataset Information

Neonatal Meningitis and Septicemia Caused by Multidrug-Resistant Elizabethkingia anophelis Identified by 16s Ribosomal RNA: An Emerging Threat.

Publications

Neonatal Meningitis and Septicemia Caused by Multidrug-Resistant <i>Elizabethkingia anophelis</i> Identified by 16s Ribosomal RNA: An Emerging Threat.

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