All Stories

  1. Distinct prophage infections in colorectal cancer-associated Bacteroides fragilis

    Article • Communications Medicine, February 2026, Springer Science + Business Media

    Dr Ulrik S. Justesen

  2. Impact of storage conditions on live bacteria in partially processed faecal microbiota transplantation products using culturomics

    Article • Letters in Applied Microbiology, October 2025, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  3. BioFire blood culture identification 2 panel as detector of bacteria in peritoneal fluid from patients with acute appendicitis

    Article • Surgery, September 2024, Elsevier

    Dr Ulrik S. Justesen

  4. Oral versus intravenous empirical antibiotics in children and adolescents with uncomplicated bone and joint infections: a nationwide, randomised, controlled, non-inferiority trial in Denmark

    Article • The Lancet Child & Adolescent Health, September 2024, Elsevier

    Dr Ulrik S. Justesen

  5. Gonorrhoea on the rise in Denmark since 2022: distinct clones drive increase in heterosexual individuals

    Article • Eurosurveillance, February 2024, European Centre for Disease Control and Prevention (ECDC)

    Dr Ulrik S. Justesen

  6. Humoral antibody response following mRNA vaccines against SARS-CoV-2 in solid organ transplant recipients; a status after a fifth and bivalent vaccine dose

    Article • Frontiers in Immunology, November 2023, Frontiers

    Dr Ulrik S. Justesen

  7. Genotypic characterisation of carbapenemase-producing organisms obtained in Denmark from patients associated with the war in Ukraine

    Article • Journal of Global Antimicrobial Resistance, September 2023, Elsevier

    Dr Ulrik S. Justesen

  8. Performance of automated antimicrobial susceptibility testing for the detection of antimicrobial resistance in gram‐negative bacteria: a NordicAST study

    Article • Apmis, August 2023, Wiley

    Dr Ulrik S. Justesen

  9. Characterisation of carbapenemase-producing Acinetobacter baumannii isolates from danish patients 2014–2021: detection of a new international clone – IC11

    Article • International Journal of Antimicrobial Agents, August 2023, Elsevier

    Dr Ulrik S. Justesen

  10. Serum Neutralization of Omicron XBB.1.5 in Kidney Transplant Recipients After Bivalent mRNA Booster Vaccination

    Article • Kidney International Reports, August 2023, Elsevier

    Dr Ulrik S. Justesen

  11. Antimicrobial susceptibility testing of Bacteroides species by disk diffusion: The NordicAST Bacteroides study

    Article • Anaerobe, June 2023, Elsevier

    Dr Ulrik S. Justesen

  12. Herpes simplex virus infection among neonates suspected of invasive bacterial infection: a population-based cohort study

    Article • Archives of Disease in Childhood Fetal & Neonatal, May 2023, BMJ

    Dr Ulrik S. Justesen

  13. Assessing the quality of the anaerobic environment — a method developed to support EUCAST disk diffusion of anaerobic bacteria

    Article • European Journal of Clinical Microbiology & Infectious Diseases, May 2023, Springer Science + Business Media

    Dr Ulrik S. Justesen

  14. Development and Clinical Application of a Multilocus Sequence Typing Scheme for Bacteroides fragilis Based on Whole-Genome Sequencing Data

    Article • Microbiology Spectrum, April 2023, ASM Journals

    Dr Ulrik S. Justesen

  15. Contaminated dicloxacillin capsules as the source of an NDM-5/OXA-48-producing Enterobacter hormaechei ST79 outbreak, Denmark and Iceland, 2022 and 2023

    Article • Eurosurveillance, March 2023, European Centre for Disease Control and Prevention (ECDC)

    Dr Kristjan O Helgason, Dr Ulrik S. Justesen

  16. Serum Neutralization of Omicron BA.5, BA.2 and BA.1 in Triple Vaccinated Kidney Transplant Recipients

    Article • Kidney International Reports, March 2023, Elsevier

    Dr Ulrik S. Justesen

  17. Humoral immune response following a third SARS-CoV-2 mRNA vaccine dose in solid organ transplant recipients compared with matched controls

    Article • Frontiers in Immunology, December 2022, Frontiers

    Dr Ulrik S. Justesen

  18. Omicron BA.5 Neutralization among Vaccine-Boosted Persons with Prior Omicron BA.1/BA.2 Infections

    Article • Emerging Infectious Diseases, December 2022, Centers for Disease Control and Prevention (CDC)

    Dr Ulrik S. Justesen

  19. Identification of microorganisms in patients with keratitis by next‐generation sequencing

    Article • Acta Ophthalmologica, November 2022, Wiley

    Dr Ulrik S. Justesen

  20. Neutralization of SARS-CoV-2 Omicron and Delta Variants in Relation to Vaccine-Induced Antibody Levels in Kidney Transplant Recipients and Healthy Controls

    Article • Microbiology Spectrum, October 2022, ASM Journals

    Dr Ulrik S. Justesen

  21. Invasive procedures and risk of brain abscess: a nationwide, population-based case-control study

    Article • Infectious Diseases, October 2022, Taylor & Francis

    Dr Ulrik S. Justesen

  22. Machine learning-based typing of Salmonella enterica O-serogroups by the Fourier-Transform Infrared (FTIR) Spectroscopy-based IR Biotyper system

    Article • Journal of Microbiological Methods, October 2022, Elsevier

    Dr Ulrik S. Justesen

  23. Risk of Psychiatric Disorders, Use of Psychiatric Hospitals, and Receipt of Psychiatric Medication in Patients With Brain Abscess in Denmark

    Article • Clinical Infectious Diseases, September 2022, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  24. Investigation of an Enterobacter hormaechei OXA-436 carbapenemase outbreak: when everything goes down the drain

    Article • Infection Prevention in Practice, September 2022, Elsevier

    Dr Ulrik S. Justesen

  25. Prescribing antibiotics: Factors driving decision-making in general practice. A discrete choice experiment

    Article • Social Science & Medicine, July 2022, Elsevier

    Dr Ulrik S. Justesen

  26. Microbiological diagnosis in cardiac implantable electronic device infections detected by sonication and next-generation sequencing

    Article • Heart Rhythm, June 2022, Elsevier

    Dr Ulrik S. Justesen

  27. Serum Neutralization of SARS-CoV-2 Omicron BA.1 and BA.2 after BNT162b2 Booster Vaccination

    Article • Emerging Infectious Diseases, June 2022, Centers for Disease Control and Prevention (CDC)

    Dr Ulrik S. Justesen

  28. Socioeconomic functioning in patients with brain abscess – a nationwide, population-based cohort study in Denmark

    Article • Journal of Infection, May 2022, Elsevier

    Dr Ulrik S. Justesen

  29. Determinants of Antibody Response to a Third SARS-CoV-2 mRNA Vaccine Dose in Solid Organ Transplant Recipients: Results from the Prospective Cohort Study COVAC-Tx

    Article • Vaccines, April 2022, MDPI AG

    Dr Ulrik S. Justesen

  30. Bacteremia With Anaerobic Bacteria and Association With Colorectal Cancer: A Population-based Cohort Study

    Article • Clinical Infectious Diseases, April 2022, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  31. Factors associated with C-reactive protein testing when prescribing antibiotics in general practice: a register-based study

    Article • BMC Primary Care, January 2022, Springer Science + Business Media

    Dr Ulrik S. Justesen

  32. Dentist’s Visits and Risk of Brain Abscess: A Nationwide, Population-Based Case-Control Study

    Article • Clinical Infectious Diseases, December 2021, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  33. SARS-CoV-2 seroprevalence among 7950 healthcare workers in the Region of Southern Denmark

    Article • International Journal of Infectious Diseases, November 2021, Elsevier

    Dr Ulrik S. Justesen

  34. Development of a EUCAST disk diffusion method for the susceptibility testing of rapidly growing anaerobic bacteria using Fastidious Anaerobe Agar (FAA): a development study using Bacteroides species

    Article • Clinical Microbiology and Infection, November 2021, Elsevier

    Dr Ulrik S. Justesen

  35. The SARS-CoV-2–neutralizing capacity of kidney transplant recipients 4 weeks after receiving a second dose of the BNT162b2 vaccine

    Article • Kidney International, November 2021, Elsevier

    Dr Ulrik S. Justesen

  36. Diagnostics with clinical microbiome‐based identification of microorganisms in patients with brain abscesses—a prospective cohort study

    Article • Apmis, October 2021, Wiley

    Dr Ulrik S. Justesen

  37. Prescribing antibiotics: the use of diagnostic tests in general practice. A register-based study

    Article • Scandinavian Journal of Primary Health Care, October 2021, Taylor & Francis

    Dr Ulrik S. Justesen

  38. Negative SARS-CoV-2 antibodies, T-cell response and virus neutralization following full vaccination in a renal transplant recipient: a call for vigilance

    Article • Clinical Microbiology and Infection, September 2021, Elsevier

    Dr Ulrik S. Justesen

  39. Immunogenicity of SARS‐CoV‐2 mRNA vaccine in solid organ transplant recipients

    Article • Journal of Internal Medicine, August 2021, Wiley

    Dr Ulrik S. Justesen

  40. Antibody and T cell immune responses following mRNA COVID-19 vaccination in patients with cancer

    Article • Cancer Cell, August 2021, Elsevier

    Dr Ulrik S. Justesen

  41. Classification of Salmonella enterica of the (Para-)Typhoid Fever Group by Fourier-Transform Infrared (FTIR) Spectroscopy

    Article • Microorganisms, April 2021, MDPI AG

    Dr Ulrik S. Justesen

  42. Prescribing antibiotics: Factors associated with C-reactive protein testing in general practice. A register-based study

    Article • February 2021, Research Square

    Dr Ulrik S. Justesen

  43. Comparison of six commercially available SARS-CoV-2 antibody assays—Choice of assay depends on intended use

    Article • International Journal of Infectious Diseases, February 2021, Elsevier

    Dr Ulrik S. Justesen

  44. Pre‐hospital antibiotic therapy preceded by blood cultures in a physician‐manned mobile emergency care unit

    Article • Acta Anaesthesiologica Scandinavica, January 2021, Wiley

    Dr Ulrik S. Justesen

  45. A case report describing Candida albicans endophthalmitis demonstrated by 16S/18S microbiome sequencing

    Article • Acta Ophthalmologica, January 2021, Wiley

    Dr Ulrik S. Justesen

  46. Mycoplasma hominis septic arthritis in a patient with hypogammaglobinaemia and rheumatoid arthritis

    Article • BMJ Case Reports, January 2021, BMJ

    Dr Ulrik S. Justesen

  47. Detection of beta-lactamase production in clinical Prevotella species by MALDI-TOF MS method

    Article • Anaerobe, October 2020, Elsevier

    Dr Ulrik S. Justesen

  48. Molecular characterization of Danish ESBL/AmpC-producing Klebsiella pneumoniae from bloodstream infections, 2018

    Article • Journal of Global Antimicrobial Resistance, September 2020, Elsevier

    Dr Ulrik S. Justesen

  49. Ceftriaxone treatment of spondylodiscitis and other serious infections with Cutibacterium acnes

    Article • Journal of Antimicrobial Chemotherapy, June 2020, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  50. Surveillance of OXA-244-producing Escherichia coli and epidemiologic investigation of cases, Denmark, January 2016 to August 2019

    Article • Eurosurveillance, May 2020, European Centre for Disease Control and Prevention (ECDC)

    Dr Ulrik S. Justesen

  51. Investigation of possible clonal transmission of carbapenemase-producing Klebsiella pneumoniae complex member isolates in Denmark using core genome MLST and National Patient Registry Data

    Article • International Journal of Antimicrobial Agents, May 2020, Elsevier

    Dr Ulrik S. Justesen

  52. Similar genomic patterns of clinical infective endocarditis and oral isolates of Streptococcus sanguinis and Streptococcus gordonii

    Article • Scientific Reports, February 2020, Springer Science + Business Media

    Dr Ulrik S. Justesen

  53. Meropenem to Children With Febrile Neutropenia Induces Monoresistant Pseudomonas aeruginosa

    Article • Journal of Pediatric Hematology/Oncology, January 2020, Wolters Kluwer Health

    Dr Ulrik S. Justesen

  54. Comparing identification of clinically relevant Prevotella species by VITEK MS and MALDI biotyper

    Article • Acta Microbiologica et Immunologica Hungarica, December 2019, Akademiai Kiado

    Dr Ulrik S. Justesen

  55. Complete hybrid genome assembly of clinical multidrug-resistant Bacteroides fragilis isolates enables comprehensive identification of antimicrobial-resistance genes and plasmids

    Article • Microbial Genomics, November 2019, Society for General Microbiology

    Dr Ulrik S. Justesen

  56. Community-acquired meningitis caused by beta-haemolytic streptococci in adults: a nationwide population-based cohort study

    Article • European Journal of Clinical Microbiology & Infectious Diseases, August 2019, Springer Science + Business Media

    Dr Ulrik S. Justesen

  57. Surveillance of vancomycin-resistant enterococci reveals shift in dominating clones and national spread of a vancomycin-variable vanA Enterococcus faecium ST1421-CT1134 clone, Denmark, 2015 to March 2019

    Article • Eurosurveillance, August 2019, European Centre for Disease Control and Prevention (ECDC)

    Dr Ulrik S. Justesen

  58. Complete genome assembly of clinical multidrug resistant Bacteroides fragilis isolates enables comprehensive identification of antimicrobial resistance genes and plasmids

    Article • May 2019, openRxiv

    Dr Ulrik S. Justesen

  59. Performance of mass spectrometric identification of clinical Prevotella species using the VITEK MS system: A prospective multi-center study

    Article • Anaerobe, December 2018, Elsevier

    Dr Ulrik S. Justesen

  60. Validation of MALDI-TOF MS Biotyper database optimized for anaerobic bacteria: The ENRIA project

    Article • Anaerobe, December 2018, Elsevier

    Dr Ulrik S. Justesen

  61. How to isolate, identify and determine antimicrobial susceptibility of anaerobic bacteria in routine laboratories

    Article • Clinical Microbiology and Infection, November 2018, Elsevier

    Dr Ulrik S. Justesen

  62. Typing of vancomycin-resistant enterococci with MALDI-TOF mass spectrometry in a nosocomial outbreak setting

    Article • Clinical Microbiology and Infection, October 2018, Elsevier

    Dr Ulrik S. Justesen

  63. A multicenter survey of antimicrobial susceptibility of Prevotella species as determined by Etest methodology

    Article • Anaerobe, August 2018, Elsevier

    Dr Ulrik S. Justesen

  64. Escherichia coliSequence Type 410 Is Causing New International High-Risk Clones

    Article • mSphere, July 2018, ASM Journals

    Dr Ulrik S. Justesen

  65. An overview of the data obtained during the validation of an optimized MALDI-TOF MS Biotyper database for the identification of anaerobic bacteria

    Article • Data in Brief, June 2018, Elsevier

    Dr Ulrik S. Justesen

  66. Antimicrobial susceptibility testing of Bacteroides fragilis using the MALDI Biotyper antibiotic susceptibility test rapid assay (MBT-ASTRA)

    Article • Anaerobe, March 2018, Elsevier

    Dr Ulrik S. Justesen, Thomas Sydenham

  67. Complete Nucleotide Sequence of an Escherichia coli Sequence Type 410 Strain Carrying bla NDM-5 on an IncF Multidrug Resistance Plasmid and ...

    Article • Genome Announcements, February 2018, ASM Journals

    Dr Ulrik S. Justesen

  68. A multi-center ring trial for the identification of anaerobic bacteria using MALDI-TOF MS

    Article • Anaerobe, December 2017, Elsevier

    Dr Ulrik S. Justesen

  69. Antimicrobial resistance in the Bacteroides fragilis group in faecal samples from patients receiving broad-spectrum antibiotics

    Article • Anaerobe, October 2017, Elsevier

    Thomas Sydenham, Dr Ulrik S. Justesen

  70. Prevalence of antimicrobial resistance and the cfiA resistance gene in Danish Bacteroides fragilis group isolates since 1973

    Article • International Journal of Antimicrobial Agents, October 2017, Elsevier

    Thomas Sydenham, Dr Ulrik S. Justesen

  71. In silico assessment of virulence factors in strains of Streptococcus oralis and Streptococcus mitis isolated from patients with Infective Endocarditis

    Article • Journal of Medical Microbiology, September 2017, Society for General Microbiology

    Dr Ulrik S. Justesen

  72. Detection of the optrA gene in a clinical ST16 Enterococcus faecalis isolate in Denmark

    Article • Journal of Global Antimicrobial Resistance, September 2017, Elsevier

    Dr Ulrik S. Justesen

  73. Emergence of vanA Enterococcus faecium in Denmark, 2005–15

    Article • Journal of Antimicrobial Chemotherapy, May 2017, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  74. Antimicrobial resistance in the Bacteroides fragilis group in faecal microbiota from healthy Danish children

    Article • International Journal of Antimicrobial Agents, May 2017, Elsevier

    Thomas Sydenham, Dr Ulrik S. Justesen

  75. WGS-based surveillance of third-generation cephalosporin-resistant Escherichia coli from bloodstream infections in Denmark

    Article • Journal of Antimicrobial Chemotherapy, March 2017, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  76. Species identification of Streptococcus bovis group isolates causing bacteremia: a comparison of two MALDI-TOF MS systems

    Article • Diagnostic Microbiology and Infectious Disease, February 2017, Elsevier

    Dr Ulrik S. Justesen

  77. Incidence of Propionibacterium acnes in initially culture-negative thioglycollate broths—a prospective cohort study at a Danish University Hospital

    Article • Clinical Microbiology and Infection, November 2016, Elsevier

    Dr Ulrik S. Justesen

  78. Phenotypic detection of thecfiAmetallo-β-lactamase inBacteroides fragiliswith the meropenem–EDTA double-ended Etest and the ROSCO KPC/MBL Confirm Kit

    Article • Journal of Antimicrobial Chemotherapy, October 2016, Oxford University Press (OUP)

    Thomas Sydenham, Dr Ulrik S. Justesen

  79. Characterization of a novel blaIMP gene, blaIMP-58, using whole genome sequencing in a Pseudomonas putida isolate detected in Denmark

    Article • Diagnostic Microbiology and Infectious Disease, October 2016, Elsevier

    Dr Ulrik S. Justesen

  80. The optimization and validation of the Biotyper MALDI-TOF MS database for the identification of gram positive anaerobic cocci

    Article • Clinical Microbiology and Infection, July 2016, Elsevier

    Dr Ulrik S. Justesen

  81. Whole genome sequencing as a tool for phylogenetic analysis of clinical strains of Mitis group streptococci

    Article • European Journal of Clinical Microbiology & Infectious Diseases, June 2016, Springer Science + Business Media

    Dr Ulrik S. Justesen

  82. Molecular characterisation of the clonal emergence of high-level ciprofloxacin-monoresistant Haemophilus influenzae in the Region of Southern Denmark

    Article • Journal of Global Antimicrobial Resistance, June 2016, Elsevier

    Dr Ulrik S. Justesen

  83. Bacteremia with the bovis group streptococci: species identification and association with infective endocarditis and with gastrointestinal disease

    Article • Diagnostic Microbiology and Infectious Disease, June 2016, Elsevier

    Dr Ulrik S. Justesen

  84. Two Serious Cases of Infection with Clostridium celatum after 40 Years in Hiding?

    Article • Journal of Clinical Microbiology, November 2015, ASM Journals

    Dr Ulrik S. Justesen

  85. Routine disc diffusion antimicrobial susceptibility testing of Clostridium difficile and association with PCR ribotype 027

    Article • European Journal of Clinical Microbiology & Infectious Diseases, August 2015, Springer Science + Business Media

    Dr Ulrik S. Justesen

  86. Draft Genome Sequence ofParabacteroides goldsteiniiwith Putative Novel Metallo-β-Lactamases Isolated from a Blood Culture from a Human Patient

    Article • Genome Announcements, August 2015, ASM Journals

    Dr Ulrik S. Justesen

  87. Characterisation of a multidrug-resistant Bacteroides fragilis isolate recovered from blood of a patient in Denmark using whole-genome sequencing

    Article • International Journal of Antimicrobial Agents, July 2015, Elsevier

    Dr Ulrik S. Justesen, Thomas Sydenham

  88. Multiple hospital outbreaks of vanA Enterococcus faecium in Denmark, 2012–13, investigated by WGS, MLST and PFGE

    Article • Journal of Antimicrobial Chemotherapy, June 2015, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  89. Draft Genome Sequences of Sanguibacteroides justesenii , gen. nov., sp. nov., Strains OUH 308042 T (= ATCC BAA-2681 T ) and OUH 3346...

    Article • Genome Announcements, March 2015, ASM Journals

    Dr Ulrik S. Justesen, Thomas Sydenham

  90. Investigation of a possible outbreak of carbapenem-resistant Acinetobacter baumannii in Odense, Denmark using PFGE, MLST and whole-genome-based SNPs

    Article • Journal of Antimicrobial Chemotherapy, March 2015, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  91. Draft Genome Sequence of “Terrisporobacter othiniensis” Isolated from a Blood Culture from a Human Patient

    Article • Genome Announcements, March 2015, ASM Journals

    Dr Ulrik S. Justesen, Thomas Sydenham

  92. Development of EUCAST disk diffusion method for susceptibility testing of the Bacteroides fragilis group isolates

    Article • Anaerobe, February 2015, Elsevier

    Dr Ulrik S. Justesen

  93. Identification of antimicrobial resistance genes in multidrug-resistant clinical Bacteroides fragilis isolates by whole genome shotgun sequencing

    Article • Anaerobe, February 2015, Elsevier

    Dr Ulrik S. Justesen, Thomas Sydenham, Dr. József Sóki

  94. First Report of Sphingomonas koreensis as a Human Pathogen in a Patient with Meningitis

    Article • Journal of Clinical Microbiology, December 2014, ASM Journals

    Dr Ulrik S. Justesen

  95. Characterization of Third-Generation Cephalosporin-Resistant Escherichia coli from Bloodstream Infections in Denmark

    Article • Microbial Drug Resistance, August 2014, Mary Ann Liebert Inc

    Dr Ulrik S. Justesen

  96. Echinocandin Failure Case Due to a Previously UnreportedFKS1Mutation in Candida krusei

    Article • Antimicrobial Agents and Chemotherapy, March 2014, ASM Journals

    Dr Ulrik S. Justesen

  97. Four Cases of Bacteremia Caused by Oscillibacter ruminantium, a Newly Described Species

    Article • Journal of Clinical Microbiology, February 2014, ASM Journals

    Dr Ulrik S. Justesen, Thomas Sydenham

  98. Characterization of Carbapenem Nonsusceptible Pseudomonas aeruginosa in Denmark: A Nationwide, Prospective Study

    Article • Microbial Drug Resistance, February 2014, Mary Ann Liebert Inc

    Dr Ulrik S. Justesen

  99. Species differentiation of Bacteroides dorei from Bacteroides vulgatus and Bacteroides ovatus from Bacteroides xylanisolvens – Back to basics

    Article • Anaerobe, December 2013, Elsevier

    Dr Ulrik S. Justesen

  100. High rates of reduced susceptibility in the Bacteroides fragilis group isolated from blood cultures – The first national survey in Denmark

    Article • International Journal of Antimicrobial Agents, August 2013, Elsevier

    Dr Ulrik S. Justesen

  101. A simple and sensitive quality control method of the anaerobic atmosphere for identification and antimicrobial susceptibility testing of anaerobic bacteria

    Article • Diagnostic Microbiology and Infectious Disease, June 2013, Elsevier

    Dr Ulrik S. Justesen

  102. Two Cases of Ruminococcus gnavus Bacteremia Associated with Diverticulitis

    Article • Journal of Clinical Microbiology, January 2013, ASM Journals

    Dr Ulrik S. Justesen

  103. Comparison of Rosco Neo-Sensitabs with Oxoid paper disks in EUCAST disk diffusion antimicrobial susceptibility testing on Mueller–Hinton agar

    Article • European Journal of Clinical Microbiology & Infectious Diseases, December 2012, Springer Science + Business Media

    Dr Ulrik S. Justesen

  104. Multidrug-resistant Bacteroides fragilis group on the rise in Europe?

    Article • Journal of Medical Microbiology, September 2012, Society for General Microbiology

    Dr Ulrik S. Justesen, Dr. József Sóki

  105. Antimicrobial susceptibility testing of Clostridium difficile using EUCAST epidemiological cut-off values and disk diffusion correlates

    Article • Clinical Microbiology and Infection, August 2012, Elsevier

    Dr Ulrik S. Justesen

  106. Patients transferred from Libya to Denmark carried OXA-48-producing Klebsiella pneumoniae, NDM-1-producing Acinetobacter baumannii and meticillin-resistant Staphylococcus aureus

    Article • International Journal of Antimicrobial Agents, August 2012, Elsevier

    Dr Ulrik S. Justesen

  107. Increasing consumption of antimicrobial agents in Denmark parallels increasing resistance in Escherichia coli bloodstream isolates

    Article • International Journal of Antimicrobial Agents, July 2012, Elsevier

    Dr Ulrik S. Justesen

  108. Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry Analysis of Gram-Positive, Catalase-Negative Cocci Not Belonging to the Streptococcus or Enterococcus Genus and Benefits of Database Extension

    Article • Journal of Clinical Microbiology, March 2012, ASM Journals

    Dr Ulrik S. Justesen

  109. Extended-spectrum β-lactamase (ESBL) in Danish clinical isolates of Escherichia coli and Klebsiella pneumoniae: Prevalence, β-lactamase distribution, phylogroups, and co-resistance

    Article • Scandinavian Journal of Infectious Diseases, February 2012, Taylor & Francis

    Dr Ulrik S. Justesen

  110. Species Identification of Clinical Isolates of Anaerobic Bacteria: a Comparison of Two Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry Systems

    Article • Journal of Clinical Microbiology, January 2012, ASM Journals

    Dr Ulrik S. Justesen

  111. Species Identification of Clinical Isolates of Anaerobic Bacteria: a Comparison of Two Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry Systems

    Article • Journal of Clinical Microbiology, October 2011, ASM Journals

    Dr Ulrik S. Justesen

  112. Emergence of extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae in Danish hospitals; this is in part explained by spread of two CTX-M-15 clones with multilocus sequence types 15 and 16 in Zealand

    Article • International Journal of Antimicrobial Agents, August 2011, Elsevier

    Dr Ulrik S. Justesen

  113. Bacteremia with Bacteroides pyogenes after a Cat Bite

    Article • Journal of Clinical Microbiology, June 2011, ASM Journals

    Dr Ulrik S. Justesen

  114. Solobacterium moorei Bacteremia: Identification, Antimicrobial Susceptibility, and Clinical Characteristics: Table 1.

    Article • Journal of Clinical Microbiology, April 2011, ASM Journals

    Dr Ulrik S. Justesen

  115. 16S rRNA Gene Sequencing in Routine Identification of Anaerobic Bacteria Isolated from Blood Cultures: TABLE 1.

    Article • Journal of Clinical Microbiology, January 2010, ASM Journals

    Dr Ulrik S. Justesen

  116. Direct 16S rRNA gene sequencing of polymicrobial culture-negative samples with analysis of mixed chromatograms

    Article • Journal of Medical Microbiology, December 2009, Society for General Microbiology

    Dr Ulrik S. Justesen

  117. Monomicrobial necrotizing fasciitis in a white male caused by hypermucoviscous Klebsiella pneumoniae

    Article • Journal of Medical Microbiology, August 2009, Society for General Microbiology

    Dr Ulrik S. Justesen

  118. Consequences of increased antibacterial consumption and change in pattern of antibacterial use in Danish hospitals

    Article • Journal of Antimicrobial Chemotherapy, February 2009, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  119. Identification of Clinically Relevant Nonhemolytic Streptococci on the Basis of Sequence Analysis of 16S-23S Intergenic Spacer Region and Partial gdh Gene

    Article • Journal of Clinical Microbiology, February 2009, ASM Journals

    Dr Ulrik S. Justesen

  120. Report of the First Human Case of Caulobacter sp. Infection

    Article • Journal of Clinical Microbiology, December 2007, ASM Journals

    Dr Ulrik S. Justesen

  121. Pharmacokinetics of Two Randomized Trials Evaluating the Safety and Efficacy of Indinavir, Saquinavir and Lopinavir in Combination with Low-Dose Ritonavir: The MaxCmin1 and 2 Trials

    Article • Basic & Clinical Pharmacology & Toxicology, November 2007, Wiley

    Dr Ulrik S. Justesen

  122. Report of the First Human Case of Caulobacter sp. Infection

    Article • Journal of Clinical Microbiology, January 2007, ASM Journals

    Dr Ulrik S. Justesen

  123. Genotyping of CYP2B6 and therapeutic drug monitoring in an HIV-infected patient with high efavirenz plasma concentrations and severe CNS side-effects

    Article • Scandinavian Journal of Infectious Diseases, January 2006, Taylor & Francis

    Dr Ulrik S. Justesen

  124. Therapeutic Drug Monitoring and Human Immunodeficiency Virus (HIV) Antiretroviral Therapy

    Article • Basic & Clinical Pharmacology & Toxicology, January 2006, Wiley

    Dr Ulrik S. Justesen

  125. The long-term pharmacokinetics and safety of adding low-dose ritonavir to a nelfinavir 1250 mg twice-daily regimen in HIV-infected patients

    Article • HIV Medicine, September 2005, Wiley

    Dr Ulrik S. Justesen

  126. Dose-dependent pharmacokinetics of delavirdine in combination with amprenavir in healthy volunteers

    Article • Journal of Antimicrobial Chemotherapy, June 2004, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  127. Pharmacokinetic Interaction between Rifampin and the Combination of Indinavir and Low‐Dose Ritonavir in HIV‐Infected Patients

    Article • Clinical Infectious Diseases, February 2004, Oxford University Press (OUP)

    Dr Ulrik S. Justesen

  128. Changing incidence of central nervous system diseases in the EuroSIDA cohort

    Article • Annals of Neurology, January 2004, Wiley

    Dr Ulrik S. Justesen

  129. Low-dose indinavir in combination with low-dose ritonavir: steady-state pharmacokinetics and long-term clinical outcome follow-up

    Article • HIV Medicine, July 2003, Wiley

    Dr Ulrik S. Justesen

  130. The use of calcium carbonate in nelfinavir-associated diarrhoea in HIV-1-infected patients

    Article • HIV Medicine, January 2003, Wiley

    Dr Ulrik S. Justesen

  131. Pharmacokinetic interaction between amprenavir and delavirdine after multiple-dose administration in healthy volunteers

    Article • British Journal of Clinical Pharmacology, January 2003, Wiley

    Dr Ulrik S. Justesen

  132. Household Transmission of Invasive Group A Streptococcus with Necrotizing Fasciitis

    Article • Scandinavian Journal of Infectious Diseases, January 2003, Taylor & Francis

    Dr Ulrik S. Justesen

  133. Simultaneous quantitative determination of the HIV protease inhibitors indinavir, amprenavir, ritonavir, lopinavir, saquinavir, nelfinavir and the nelfinavir active metabolite M8 in plasma by liquid chromatography

    Article • Journal of Chromatography B, January 2003, Elsevier

    Dr Ulrik S. Justesen

  134. Diurnal variation of plasma protease inhibitor concentrations

    Article • AIDS, December 2002, Wolters Kluwer Health

    Dr Ulrik S. Justesen