ArticleBMC genomics2024
Whole-genome sequencing of Klebsiella pneumoniae MDR circulating in a pediatric hospital setting: a comprehensive genome analysis of isolates from Guayaquil, Ecuador.
Article in BMC genomics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed.
- The Evolving Clonal, Plasmid-Mediated Resistome, Virulome and Therapeutic Landscape of Carbapenem-ResistantAntibiotics (Basel, Switzerland) · 2026Article
- Adaptive Evolution in Aminoacyl-tRNA Synthetases Drives Antibiotic Tolerance and Resistance in Clinical Klebsiella pneumoniae Isolates.Molecular biotechnology · 2026Article
- Genomic Epidemiology of Multidrug-Resistant Clinical Klebsiella pneumoniae From Pakistan.MicrobiologyOpen · 2026Article
- Multidrug-resistantNew microbes and new infections · 2026Article
- Co-occurrence of blaBMC microbiology · 2026Article
- Prevalence of Carbapenem-Resistant Gram-Negative Bacilli from Intensive Care Units from Latin America and the Caribbean: A Systematic Review and Meta-Analysis.Antibiotics (Basel, Switzerland) · 2026Review
- Nationwide genomic surveillance of carbapenem- and colistin-resistant Klebsiella pneumoniae bloodstream isolates in Thailand (2020-2024).Scientific reports · 2026Article
- Antibiotic resistance inFrontiers in microbiology · 2026Review
- Genome Sequencing and Comparative Genomic Analysis of Multidrug-ResistantInfection and drug resistance · 2025Article
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7 authors.
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Abstract
backgroundKlebsiella pneumoniae is the major cause of nosocomial infections worldwide and is related to a worsening increase in Multidrug-Resistant Bacteria (MDR) and virulence genes that seriously affect immunosuppressed patients, long-stay intensive care patients, elderly individuals, and children. Whole-Genome Sequencing (WGS) has resulted in a useful strategy for characterizing the genomic components of clinically important bacteria, such as K. pneumoniae, enabling them to monitor genetic changes and understand transmission, highlighting the risk of dissemination of resistance and virulence associated genes in hospitals. In this study, we report on WGS 14 clinical isolates of K. pneumoniae from a pediatric hospital biobank of Guayaquil, Ecuador.
resultsThe main findings revealed pronounced genetic heterogeneity among the isolates. Multilocus sequencing type ST45 was the predominant lineage among non-KPC isolates, whereas ST629 was found more frequently among KPC isolates. Phylogenetic analysis suggested local transmission dynamics. Comparative genomic analysis revealed a core set of 3511 conserved genes and an open pangenome in neonatal isolates. The diversity of MLSTs and capsular types, and the high genetic diversity among these isolates indicate high intraspecific variability. In terms of virulence factors, we identified genes associated with adherence, biofilm formation, immune evasion, secretion systems, multidrug efflux pump transporters, and a notably high number of genes related to iron uptake. A large number of these genes were detected in the ST45 isolate, whereas iron uptake yersiniabactin genes were found exclusively in the non-KPC isolates. We observed high resistance to commonly used antibiotics and determined that these isolates exhibited multidrug resistance including β-lactams, aminoglycosides, fluoroquinolones, quinolones, trimetropins, fosfomycin and macrolides; additionally, resistance-associated point mutations and cross-resistance genes were identified in all the isolates. We also report the first K. pneumoniae KPC-3 gene producers in Ecuador.
conclusionsOur WGS results for clinical isolates highlight the importance of MDR in neonatal K. pneumoniae infections and their genetic diversity. WGS will be an imperative strategy for the surveillance of K. pneumoniae in Ecuador, and will contribute to identifying effective treatment strategies for K. pneumoniae infections in critical units in patients at stratified risk.
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