Evidence map›Paper›PMID 41742319›Full record

ArticleAntimicrobial resistance and infection control2026

Application of next-generation sequencing to investigate a Serratia marcescens outbreak in a neonatal intensive care unit.

Michela Bulfoni, Nicolò Gualandi, Beatrice Krpan, Giorgia Vesca, Cinzia Lombardo, Stefania Marzinotto, Barbara Marcon, Alda Faruzzo, Cinzia Cargnelutti, Guerrina Virgili and 3 more

Abstract read
In one paragraph

Article in Antimicrobial resistance and infection control, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

Who cites it

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4 · The record

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5 · Who and what money

Authors and funding

13 authors.

Michela BulfoniDepartment of Medicine, University of Udine, Udine, Italy. michela.bulfoni@uniud.it.
Nicolò GualandiDepartment of Medicine, University of Udine, Udine, Italy.
Beatrice KrpanDepartment of Laboratory Medicine, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Giorgia VescaDepartment of Medicine, University of Udine, Udine, Italy.
Cinzia LombardoDepartment of Laboratory Medicine, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Stefania MarzinottoDepartment of Laboratory Medicine, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Barbara MarconDepartment of Laboratory Medicine, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Alda FaruzzoClinical Risk, Quality and Accreditation Unit, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Cinzia CargneluttiClinical Risk, Quality and Accreditation Unit, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Guerrina VirgiliClinical Risk, Quality and Accreditation Unit, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Roberto CocconiClinical Risk, Quality and Accreditation Unit, Friuli Centrale Healthcare University Hospital (ASUFC), Udine, Italy.
Corrado PipanDepartment of Medicine, University of Udine, Udine, Italy.
Francesco CurcioDepartment of Medicine, University of Udine, Udine, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionNosocomial infections in Neonatal Intensive Care Units (NICU) are a major concern due to the vulnerability of premature and immunocompromised infants. Serratia marcescens is an opportunistic pathogen often involved in these infections, contributing significantly to morbidity and mortality. Integrating Next-Generation Sequencing (NGS) into infection control programs can enhance detection, surveillance, and prevention efforts. This study aimed to develop a mapping-based pipeline for strain typing and phylogenetic analysis of nosocomial infections, enabling detailed comparison of microbial genomes.

methodsA retrospective study describing the outbreak was conducted on 18 S. marcescens strains from 14 patients and 2 from environmental swabs collected in the NICU of the University Hospital of Udine between 2023 and 2024. Genomic DNA was extracted and libraries were prepared using the FX DNA Library Preparation Kit (Qiagen). Whole Genome Sequencing (WGS) was performed using an Illumina MiSeq platform (2 × 300 bp paired-end). Data analysis was carried out with CLC Genomic Workbench (Qiagen), using a custom-optimized pipeline for sequence typing (ST). The bioinformatics workflow was developed and validated in-house to ensure accurate SNP-based phylogenetic analysis.

resultsWGS revealed phylogenetic relationships among strains. Six isolates showed close genetic relatedness. Identical genotypes were detected in strains from patient blood samples, rectal swabs, and environmental sources, suggesting potential transmission links.

conclusionsNGS offers detailed insights into the molecular epidemiology of infections and colonization in the NICU. The genomic data generated can support real-time, evidence-based refinement of infection control strategies, contributing to improved patient safety and outbreak prevention.

Indexed as

Cross InfectionDisease OutbreaksHigh-Throughput Nucleotide SequencingIntensive Care Units, NeonatalSerratia InfectionsSerratia marcescensGenome, BacterialHumansInfant, NewbornPhylogenyRetrospective StudiesWhole Genome SequencingHealth surveillanceNeonatal intensive care unit (NICU)Next generation sequencing (NGS)Nosocomial infectionPhylogenetic treeSerratia marcescensWhole genome sequencing (WGS)

Identifiers

PMID41742319
PMCPMC13040874

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.