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Microbiology
Norway
2026

D-Index & Metrics

Microbiology

D-Index
68
Citations
14135
World Ranking
2193
National Ranking
7

Research.com Recognitions

  • 2026 - Research.com Microbiology in Norway Leader Award
  • 2025 - Research.com Microbiology in Norway Leader Award
  • 2022 - Research.com Microbiology in Norway Leader Award

Overview

Arnfinn Sundsfjord is affiliated with the University of Tromsø - The Arctic University of Norway in Norway. The scientist's research portfolio spans multiple areas within biochemistry, genetics, molecular biology, and medicine, with a particular focus on infectious diseases and antimicrobial resistance.

Their main fields of study include:

  • Biochemistry, Genetics and Molecular Biology
  • Medicine

Subfields of study emphasize areas such as:

  • Molecular Medicine
  • Endocrinology
  • Epidemiology
  • Infectious Diseases
  • Clinical Biochemistry

The core topics of their work address aspects related to:

  • Antibiotic Resistance in Bacteria
  • Bacterial Identification and Susceptibility Testing
  • Antimicrobial Resistance in Staphylococcus
  • Enterobacteriaceae and Cronobacter Research
  • Bacterial biofilms and quorum sensing
  • Bacterial Genetics and Biotechnology
  • Escherichia coli research studies

Arnfinn Sundsfjord has co-authored frequently with:

  • Ørjan Samuelsen
  • Iren H. Löhr
  • Marit Andrea Klokkhammer Hetland
  • Gunnar Skov Simonsen
  • Niclas Raffelsberger

Several publication venues commonly feature their work, including:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Tidsskrift for Den norske legeforening
  • Clinical Microbiology and Infection
  • Journal of Antimicrobial Chemotherapy
  • Microbial Genomics

Recent papers authored by Arnfinn Sundsfjord highlight various aspects of bacterial resistance and epidemiology:

  • Gastrointestinal carriage of Klebsiella pneumoniae in a general adult population: a cross-sectional study of risk factors and bacterial genomic diversity, 2021, Gut Microbes
  • Pseudomonas aeruginosa antimicrobial susceptibility profiles, resistance mechanisms and international clonal lineages: update from ESGARS-ESCMID/ISARPAE Group, 2023, Clinical Microbiology and Infection
  • Structural basis for PoxtA-mediated resistance to phenicol and oxazolidinone antibiotics, 2022, Nature Communications
  • High prevalence of multidrug resistant ESBL- and plasmid mediated AmpC-producing clinical isolates of Escherichia coli at Maputo Central Hospital, Mozambique, 2021, BMC Infectious Diseases
  • A nationwide genomic study of clinical Klebsiella pneumoniae in Norway 2001-15: introduction and spread of ESBLs facilitated by clonal groups CG15 and CG307, 2021, Journal of Antimicrobial Chemotherapy

Best Publications

  • Understanding the mechanisms and drivers of antimicrobial resistance

    Alison H Holmes;Luke S P Moore;Arnfinn Sundsfjord;Arnfinn Sundsfjord;Martin Steinbakk

  • Mobile genetic elements and their contribution to the emergence of antimicrobial resistant Enterococcus faecalis and Enterococcus faecium.

    K. Hegstad;K. Hegstad;T. Mikalsen;T.M. Coque;G. Werner

  • Insights into the global molecular epidemiology of carbapenem non-susceptible clones of Acinetobacter baumannii.

    Nabil Karah;Nabil Karah;Arnfinn Sundsfjord;Arnfinn Sundsfjord;Kevin Towner;Ørjan Samuelsen

  • A sensitive and specific phenotypic assay for detection of metallo-β-lactamases and KPC in Klebsiella pneumoniae with the use of meropenem disks supplemented with aminophenylboronic acid, dipicolinic acid and cloxacillin

    C.G. Giske;C.G. Giske;L. Gezelius;Ø. Samuelsen;M. Warner

  • Genetic methods for detection of antimicrobial resistance

    Arnfinn Sundsfjord;Arnfinn Sundsfjord;Gunnar S. Simonsen;Bjørg C. Haldorsen;Håkon Haaheim

  • The CTX-M Conundrum: Dissemination of Plasmids and Escherichia coli Clones

    Umaer Naseer;Arnfinn Sundsfjord

  • Risk factors for community-acquired urinary tract infections caused by ESBL-producing enterobacteriaceae--a case-control study in a low prevalence country

    Arne Vasli Lund Søraas;Arnfinn Sundsfjord;Arnfinn Sundsfjord;Irene Sandven;Cathrine Brunborg

  • Emergence of clonally related Klebsiella pneumoniae isolates of sequence type 258 producing plasmid-mediated KPC carbapenemase in Norway and Sweden

    Ørjan Samuelsen;Umaer Naseer;Ståle Tofteland;Dag Harald Skutlaberg

  • Effects of Phenotype and Genotype on Methods for Detection of Extended-Spectrum-β-Lactamase-Producing Clinical Isolates of Escherichia coli and Klebsiella pneumoniae in Norway

    Ståle Tofteland;Bjørg Haldorsen;Kristin H. Dahl;Gunnar S. Simonsen;Gunnar S. Simonsen

  • Molecular Epidemiology of Metallo-β-Lactamase-Producing Pseudomonas aeruginosa Isolates from Norway and Sweden Shows Import of International Clones and Local Clonal Expansion

    Ørjan Samuelsen;Mark A. Toleman;Arnfinn Sundsfjord;Arnfinn Sundsfjord;Johan Rydberg

  • Amplification and sequencing of the control regions of BK and JC virus from human urine by polymerase chain reaction

    Trond Flægstad;Trond Flægstad;Arnfinn Sundsfjord;Ray R. Arthur;Michael Pedersen

  • BK and JC Viruses in Human Immunodeficiency Virus Type 1-Infected Persons: Prevalence, Excretion, Viremia, and Viral Regulatory Regions

    Arnfinn Sundsfjord;Trond Flaegstad;Reinhardt Flø;Anna R. Spein

  • Redefining extended-spectrum β-lactamases: balancing science and clinical need

    Christian G. Giske;Arnfinn S. Sundsfjord;Gunnar Kahlmeter;Neil Woodford

  • The effect of dietary fatty acids on lactic acid bacteria associated with the epithelial mucosa and from faecalia of Arctic charr, Salvelinus alpinus (L.)

    E. Ringø;H. R. Bendiksen;S. J. Gausen;A. Sundsfjord

  • Heterogeneity in the vanB Gene Cluster of Genomically Diverse Clinical Strains of Vancomycin-Resistant Enterococci

    Kristin Hegstad Dahl;Gunnar Skov Simonsen;Ørjan Olsvik;Arnfinn Sundsfjord

  • Factors affecting the reversal of antimicrobial-drug resistance.

    Pål J Johnsen;Jeffrey P Townsend;Thomas Bøhn;Gunnar S Simonsen;Gunnar S Simonsen;Gunnar S Simonsen

  • Multilevel population genetic analysis of vanA and vanB Enterococcus faecium causing nosocomial outbreaks in 27 countries (1986–2012)

    Ana R Freitas;Ana P. Tedim;Maria Francia;Lars Bogø Jensen

  • Experimental expression in mice and spontaneous expression in human SLE of polyomavirus T-antigen. A molecular basis for induction of antibodies to DNA and eukaryotic transcription factors.

    O P Rekvig;U Moens;A Sundsfjord;G Bredholt

  • WHO global research priorities for antimicrobial resistance in human health

    Unknown

  • A long-term low-frequency hospital outbreak of KPC-producing Klebsiella pneumoniae involving Intergenus plasmid diffusion and a persisting environmental reservoir.

    Ståle Tofteland;Umaer Naseer;Umaer Naseer;Jan Helge Lislevand;Arnfinn Sundsfjord;Arnfinn Sundsfjord

  • Continuing high prevalence of VanA-type vancomycin-resistant enterococci on Norwegian poultry farms three years after avoparcin was banned.

    K. Borgen;K. Borgen;G.S. Simonsen;A. Sundsfjord;Y. Wasteson

  • PCR-based plasmid typing in Enterococcus faecium strains reveals widely distributed pRE25-, pRUM-, pIP501- and pHTβ-related replicons associated with glycopeptide resistance and stabilizing toxin–antitoxin systems

    Torill C.S. Rosvoll;Torunn Pedersen;Hege Sletvold;Pål. J. Johnsen

Frequent Co-Authors

Gunnar Skov Simonsen
Gunnar Skov Simonsen Wellcome Sanger Institute
Ørjan Samuelsen
Ørjan Samuelsen University Hospital of North Norway
Christian G. Giske
Christian G. Giske Karolinska University Hospital
Timothy R. Walsh
Timothy R. Walsh University of Oxford
Dominique A. Caugant
Dominique A. Caugant Norwegian Institute of Public Health
Gunnar Kahlmeter
Gunnar Kahlmeter Uppsala University
Sabiha Y. Essack
Sabiha Y. Essack University of KwaZulu-Natal
Rob J. L. Willems
Rob J. L. Willems Utrecht University
Kaare Magne Nielsen
Kaare Magne Nielsen University of Tromsø - The Arctic University of Norway
Mark Toleman
Mark Toleman Cardiff University

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