Evidence map›Paper›PMID 33298160›Full record

ArticleGenome medicine2020

A Klebsiella pneumoniae ST307 outbreak clone from Germany demonstrates features of extensive drug resistance, hypermucoviscosity, and enhanced iron acquisition.

Stefan E Heiden, Nils-Olaf Hübner, Jürgen A Bohnert, Claus-Dieter Heidecke, Axel Kramer, Veronika Balau, Wolfgang Gierer, Stephan Schaefer, Tim Eckmanns, Sören Gatermann and 4 more

Open access · goldAbstract read
In one paragraph

Article in Genome medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed, 1 pooled it
8.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

103 citing papers in PubMed, 1 synthesis or guideline pooled it, 173 citations in OpenAlex.

  1. Pathogens (Basel, Switzerland) · 2024
    Pooled it
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  5. Hypermucoviscosity inJournal of bacteriology · 2026
    Review
  6. Genomic Analysis of HypervirulentIranian journal of biotechnology · 2026
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  10. Carbapenemase-producing hypervirulentJournal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada · 2026
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43 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 5 institutions in 1 country.

Stefan E HeidenInstitute of Pharmacy, Pharmaceutical Microbiology, University of Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17489, Greifswald, Germany.
Nils-Olaf HübnerCentral Unit for Infection Prevention and Control, University Medicine Greifswald, Greifswald, Germany.
Jürgen A BohnertFriedrich Loeffler-Institute of Medical Microbiology, University Medicine Greifswald, Greifswald, Germany.
Claus-Dieter HeideckeDepartment of General, Visceral, Thoracic and Vascular Surgery, University Medicine Greifswald, Greifswald, Germany.
Axel KramerInstitute for Hygiene and Environmental Medicine, University Medicine Greifswald, Greifswald, Germany.
Veronika BalauIMD Laboratory Greifswald, Institute of Medical Diagnostics, Greifswald, Germany.
Wolfgang GiererMVZ Laboratory Limbach Vorpommern-Rügen, Stralsund, Germany.
Stephan SchaeferMVZ Laboratory Limbach Vorpommern-Rügen, Stralsund, Germany.
Tim EckmannsDepartment for Infectious Disease Epidemiology, Robert Koch-Institute, Berlin, Germany.
Sören GatermannNational Reference Centre for Multidrug-Resistant Gram-Negative Bacteria, Ruhr University Bochum, Bochum, Germany.
Elias EgerInstitute of Pharmacy, Pharmaceutical Microbiology, University of Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17489, Greifswald, Germany.
Sebastian GuentherInstitute of Pharmacy, Pharmaceutical Biology, University of Greifswald, Greifswald, Germany.
Karsten BeckerFriedrich Loeffler-Institute of Medical Microbiology, University Medicine Greifswald, Greifswald, Germany.
Katharina SchauflerInstitute of Pharmacy, Pharmaceutical Microbiology, University of Greifswald, Friedrich-Ludwig-Jahn-Str. 17, 17489, Greifswald, Germany. katharina.schaufler@uni-greifswald.de.ORCID 0000-0002-2669-8799
Universitätsmedizin Greifswald · DEUniversität Greifswald · DEFriedrich-Loeffler-Institut · DERobert Koch Institute · DERuhr University Bochum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAntibiotic-resistant Klebsiella pneumoniae are a major cause of hospital- and community-acquired infections, including sepsis, liver abscess, and pneumonia, driven mainly by the emergence of successful high-risk clonal lineages. The K. pneumoniae sequence type (ST) 307 lineage has appeared in several different parts of the world after first being described in Europe in 2008. From June to October 2019, we recorded an outbreak of an extensively drug-resistant ST307 lineage in four medical facilities in north-eastern Germany.

methodsHere, we investigated these isolates and those from subsequent cases in the same facilities. We performed whole-genome sequencing to study phylogenetics, microevolution, and plasmid transmission, as well as phenotypic experiments including growth curves, hypermucoviscosity, siderophore secretion, biofilm formation, desiccation resilience, serum survival, and heavy metal resistance for an in-depth characterization of this outbreak clone.

resultsPhylogenetics suggest a homogenous phylogram with several sub-clades containing either isolates from only one patient or isolates originating from different patients, suggesting inter-patient transmission. We identified three large resistance plasmids, carrying either NDM-1, CTX-M-15, or OXA-48, which K. pneumoniae ST307 likely donated to other K. pneumoniae isolates of different STs and even other bacterial species (e.g., Enterobacter cloacae) within the clinical settings. Several chromosomally and plasmid-encoded, hypervirulence-associated virulence factors (e.g., yersiniabactin, metabolite transporter, aerobactin, and heavy metal resistance genes) were identified in addition. While growth, biofilm formation, desiccation resilience, serum survival, and heavy metal resistance were comparable to several control strains, results from siderophore secretion and hypermucoviscosity experiments revealed superiority of the ST307 clone, similar to an archetypical, hypervirulent K. pneumoniae strain (hvKP1).

conclusionsThe combination of extensive drug resistance and virulence, partly conferred through a "mosaic" plasmid carrying both antibiotic resistance and hypervirulence-associated features, demonstrates serious public health implications.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsBiofilmsDisease OutbreaksDrug Resistance, BacterialGenes, BacterialGermanyHumansIronKlebsiella InfectionsKlebsiella pneumoniaePhylogenyPlasmidsPolymorphism, Single NucleotideVirulenceVirulence FactorsAnti-Bacterial AgentsBacterial ProteinsIronVirulence FactorsHypervirulence“Mosaic” plasmidOutbreakPlasmid transmissionXDR Klebsiella pneumoniae

Identifiers

PMID33298160
PMCPMC7724794
OpenAlexW3113167153

What OpenQuestion holds

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LicenceCC BY
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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.