All Stories

  1. Persistence of antibodies to pneumococcal conjugate vaccine compared to polysaccharide vaccine in patients with Crohn’s disease – one year follow up

    Article • Infectious Diseases, July 2019, Taylor & Francis

    karen a krogfelt

  2. More than just Borrelia? A study of co-infection and etiology in erythema migrans patients from southernmost Sweden

    Article • Infectious Diseases, May 2019, Taylor & Francis

    Dr Ram B De, karen a krogfelt

  3. Distinct inflammatory and cytopathic characteristics of Escherichia coli isolates from inflammatory bowel disease patients

    Article • International Journal of Medical Microbiology, December 2015, Elsevier

    karen a krogfelt

  4. The Murine Lung Microbiome Changes During Lung Inflammation and Intranasal Vancomycin Treatment

    Article • The Open Microbiology Journal, November 2015, Bentham Science Publishers

    karen a krogfelt

  5. In vivoexpression of antimicrobial peptides in atopic dermatitis

    Article • Experimental Dermatology, October 2015, Wiley

    karen a krogfelt, Dr Maja-Lisa Clausen

  6. Immunosuppressive drugs impairs antibody response of the polysaccharide and conjugated pneumococcal vaccines in patients with Crohn's disease

    Article • Vaccine, October 2015, Elsevier

    karen a krogfelt

  7. Control regions for chromosome replication are conserved with respect to sequence and location among Escherichia coli strains

    Article • Frontiers in Microbiology, September 2015, Frontiers

    karen a krogfelt

  8. Comparison of three commercial fecal calprotectin ELISA test kits used in patients with Inflammatory Bowel Disease

    Article • Scandinavian Journal of Gastroenterology, September 2015, Taylor & Francis

    karen a krogfelt

  9. Mapping the Evolution of Hypervirulent Klebsiella pneumoniae

    Article • mBio, July 2015, ASM Journals

    karen a krogfelt

  10. Babesia spp. and other pathogens in ticks recovered from domestic dogs in Denmark

    Article • Parasites & Vectors, May 2015, Springer Science + Business Media

    karen a krogfelt

  11. Author’s reply: Trends in Human Leptospirosis in Denmark, 1980 to 2012

    Article • Eurosurveillance, March 2015, European Centre for Disease Control and Prevention (ECDC)

    karen a krogfelt

  12. Novel Aggregative Adherence Fimbria Variant of Enteroaggregative Escherichia coli

    Article • Infection and Immunity, January 2015, ASM Journals

    karen a krogfelt

  13. A Novel Assay for Easy and Rapid Quantification ofHelicobacter pyloriAdhesion

    Article • Helicobacter, January 2015, Wiley

    karen a krogfelt

  14. Campylobacter, Salmonella, and Yersinia antibodies and pregnancy outcome in Danish women with occupational exposure to animals

    Article • International Journal of Infectious Diseases, November 2014, Elsevier

    karen a krogfelt

  15. Ciprofloxacin and probiotic Escherichia coli Nissle add-on treatment in active ulcerative colitis: A double-blind randomized placebo controlled clinical trial

    Article • Journal of Crohn s and Colitis, November 2014, Oxford University Press (OUP)

    karen a krogfelt

  16. Temporal Trends in Antimicrobial Resistance and Virulence-Associated Traits within the Escherichia coli Sequence Type 131 Clonal Group and ItsH30 andH30-Rx Subclones, 1968 to 2012

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

    Dr Bente Olesen, karen a krogfelt

  17. Detecting Non-typhoid Salmonella in Humans by Enzyme-Linked Immunosorbent Assays (ELISAs): Practical and Epidemiological Aspects

    Article • September 2014, Springer Science + Business Media

    karen a krogfelt

  18. Seroincidence of Human Infections With Nontyphoid Salmonella Compared With Data From Public Health Surveillance and Food Animals in 13 European Countries

    Article • Clinical Infectious Diseases, August 2014, Oxford University Press (OUP)

    karen a krogfelt

  19. Antibiotic use during pregnancy alters the commensal vaginal microbiota

    Article • Clinical Microbiology and Infection, July 2014, Elsevier

    karen a krogfelt

  20. Antibody development to Fusobacterium necrophorum in patients with peritonsillar abscess

    Article • European Journal of Clinical Microbiology & Infectious Diseases, May 2014, Springer Science + Business Media

    karen a krogfelt

  21. Tu1759 Hemolysin in IBD Associated E Coli Disrupts Tight Junctions

    Article • Gastroenterology, May 2014, Elsevier

    karen a krogfelt

  22. Mo1227 Ciprofloxacin and Probiotic Escherichia coli Nissle As Add-on Treatment in Active Ulcerative Colitis; a Double-Blinded Randomized Placebo Controlled Clinical Trial

    Article • Gastroenterology, May 2014, Elsevier

    karen a krogfelt

  23. A Novel Serine Protease Secreted by Medicinal Maggots Enhances Plasminogen Activator-Induced Fibrinolysis

    Article • PLoS ONE, March 2014, PLOS

    karen a krogfelt

  24. Microbial diversity in fecal samples depends on DNA extraction method: easyMag DNA extraction compared to QIAamp DNA stool mini kit extraction

    Article • BMC Research Notes, January 2014, Springer Science + Business Media

    karen a krogfelt

  25. Prevalence and Predictors of Antibiotic Administration during Pregnancy and Birth

    Article • PLoS ONE, December 2013, PLOS

    karen a krogfelt

  26. Serological follow-up after non-typhoid salmonella infection in humans using a mixed lipopolysaccharide ELISA

    Article • International Journal of Medical Microbiology, December 2013, Elsevier

    karen a krogfelt

  27. An Escherichia coli Nissle 1917 Missense Mutant Colonizes the Streptomycin-Treated Mouse Intestine Better than the Wild Type but Is Not a Better Probiotic

    Article • Infection and Immunity, November 2013, ASM Journals

    karen a krogfelt, Dr Paul S Cohen

  28. Deep phenotyping of the unselected COPSAC2010 birth cohort study

    Article • Clinical & Experimental Allergy, November 2013, Wiley

    karen a krogfelt

  29. Structural and Population Characterization of MrkD, the Adhesive Subunit of Type 3 Fimbriae

    Article • Journal of Bacteriology, October 2013, ASM Journals

    karen a krogfelt

  30. Seroepidemiology of pertussis in a cross-sectional study of an adult general population in Denmark

    Article • Epidemiology and Infection, October 2013, Cambridge University Press

    karen a krogfelt

  31. High Levels of Extended-Spectrum Beta-Lactamases in a Major Teaching Hospital in Ghana: The Need for Regular Monitoring and Evaluation of Antibiotic Resistance

    Article • American Journal of Tropical Medicine and Hygiene, September 2013, American Society of Tropical Medicine and Hygiene

    karen a krogfelt

  32. Antimicrobial peptides in the skin

    Article • British Journal of Dermatology, August 2013, Oxford University Press (OUP)

    karen a krogfelt, Dr Maja-Lisa Clausen

  33. Two years' performance of an in-house ELISA for diagnosis of Legionnaires' disease: Detection of specific IgM and IgG antibodies against Legionella pneumophila serogroup 1, 3 and 6 in human serum

    Article • Journal of Microbiological Methods, August 2013, Elsevier

    karen a krogfelt

  34. Prevalence of Coxiella burnetii in women exposed to livestock animals, Denmark, 1996 to 2002

    Article • Eurosurveillance, July 2013, European Centre for Disease Control and Prevention (ECDC)

    karen a krogfelt

  35. Role of Klebsiella pneumoniae Type 1 and Type 3 Fimbriae in Colonizing Silicone Tubes Implanted into the Bladders of Mice as a Model of Catheter-Associated Urinary Tract Infections

    Article • Infection and Immunity, June 2013, ASM Journals

    karen a krogfelt

  36. Campylobacter jejuni carbon starvation protein A (CstA) is involved in peptide utilization, motility and agglutination, and has a role in stimulation of dendritic cells

    Article • Journal of Medical Microbiology, May 2013, Society for General Microbiology

    karen a krogfelt

  37. Tu1664 Functional Divergence in Innate Immune Activating Properties of E. Coli Strains From Patients With Ulcerative Colitis or Crohn's Disease

    Article • Gastroenterology, May 2013, Elsevier

    karen a krogfelt

  38. Evaluation of PCR methods for the diagnosis of pertussis by the European surveillance network for vaccine-preventable diseases (EUVAC.NET)

    Article • European Journal of Clinical Microbiology & Infectious Diseases, April 2013, Springer Science + Business Media

    karen a krogfelt

  39. Use of Tetravalent Galabiose for Inhibition of Streptococcus Suis Serotype 2 Infection in a Mouse Model

    Article • Biology, April 2013, MDPI AG

    karen a krogfelt

  40. Prevalence and Characteristics of the Epidemic Multiresistant Escherichia coli ST131 Clonal Group among Extended-Spectrum Beta-Lactamase-Producing E. coli Isolates in Copenhagen, Denmark

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

    karen a krogfelt, Dr Bente Olesen

  41. ClpP-dependent and -independent activities encoded by the polycistronic clpK-encoding locus contribute to heat shock survival in Klebsiella pneumoniae

    Article • Research in Microbiology, April 2013, Elsevier

    karen a krogfelt

  42. The Alkaloid Compound Harmane Increases the Lifespan of Caenorhabditis elegans during Bacterial Infection, by Modulating the Nematode’s Innate Immune Response

    Article • PLoS ONE, March 2013, PLOS

    karen a krogfelt

  43. Active ulcerative colitis associated with low prevalence ofBlastocystisandDientamoeba fragilisinfection

    Article • Scandinavian Journal of Gastroenterology, March 2013, Taylor & Francis

    karen a krogfelt

  44. Pathogenic Bacteria Colonizing the Airways in Asymptomatic Neonates Stimulates Topical Inflammatory Mediator Release

    Article • American Journal of Respiratory and Critical Care Medicine, March 2013, American Thoracic Society

    karen a krogfelt

  45. No excess risk of adverse pregnancy outcomes among women with serological markers of previous infection with Coxiella burnetii: evidence from the Danish National Birth Cohort

    Article • BMC Infectious Diseases, February 2013, Springer Science + Business Media

    karen a krogfelt

  46. Cross-contamination: Comparison of Nasal and Chronic Leg Ulcer Staphy-lococcus aureus Strains Isolated from the Same Patient

    Article • The Open Microbiology Journal, February 2013, Bentham Science Publishers

    karen a krogfelt

  47. Role of Enteroaggregative Escherichia coli Virulence Factors in Uropathogenesis

    Article • Infection and Immunity, January 2013, ASM Journals

    karen a krogfelt, Dr Bente Olesen

  48. Enteroaggregative Escherichia coli

    Article • January 2013, Elsevier

    karen a krogfelt

  49. The murine lung microbiome in relation to the intestinal and vaginal bacterial communities

    Article • BMC Microbiology, January 2013, Springer Science + Business Media

    karen a krogfelt

  50. List of Contributors

    Article • January 2013, Elsevier

    karen a krogfelt

  51. Reply to Guy et al.: Support for a bottleneck in the 2011 Escherichia coli O104:H4 outbreak in Germany

    Article • Proceedings of the National Academy of Sciences, December 2012, Proceedings of the National Academy of Sciences

    karen a krogfelt

  52. Pulsed-Field Gel Electrophoresis Analysis of Bordetella pertussis Isolates Circulating in Europe from 1998 to 2009

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

    karen a krogfelt

  53. Detection of antibodies to Campylobacter in humans using enzyme-linked immunosorbent assays: a review of the literature

    Article • Diagnostic Microbiology and Infectious Disease, October 2012, Elsevier

    karen a krogfelt

  54. Novel TaqMan® PCR for detection of Leptospira species in urine and blood: Pit-falls of in silico validation

    Article • Journal of Microbiological Methods, October 2012, Elsevier

    karen a krogfelt

  55. Lack of the RNA chaperone Hfq attenuates pathogenicity of several Escherichia coli pathotypes towards Caenorhabditis elegans

    Article • Microbes and Infection, October 2012, Elsevier

    karen a krogfelt

  56. Living with Cat and Dog Increases Vaginal Colonization with E. coli in Pregnant Women

    Article • PLoS ONE, September 2012, PLOS

    karen a krogfelt

  57. Enteroaggregative Escherichia coli O78:H10, the Cause of an Outbreak of Urinary Tract Infection

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

    karen a krogfelt, Dr Bente Olesen

  58. Novel screening assay for in vivo selection of Klebsiella pneumoniae genes promoting gastrointestinal colonisation

    Article • BMC Microbiology, September 2012, Springer Science + Business Media

    karen a krogfelt

  59. Serological cross-sectional studies on salmonella incidence in eight European countries: no correlation with incidence of reported cases

    Article • BMC Public Health, July 2012, Springer Science + Business Media

    karen a krogfelt

  60. The Fimbriae of Enteroaggregative Escherichia coli Induce Epithelial Inflammation In Vitro and in a Human Intestinal Xenograft Model

    Article • The Journal of Infectious Diseases, June 2012, Oxford University Press (OUP)

    karen a krogfelt

  61. Biofilm formation of Klebsiella pneumoniae on urethral catheters requires either type 1 or type 3 fimbriae

    Article • FEMS Immunology & Medical Microbiology, April 2012, Oxford University Press (OUP)

    karen a krogfelt

  62. Characterization of a novel chaperone/usher fimbrial operon present on KpGI-5, a methionine tRNA gene-associated genomic island in Klebsiella pneumoniae

    Article • BMC Microbiology, April 2012, Springer Science + Business Media

    karen a krogfelt

  63. Concurrent emergence of multidrug resistance and heat resistance by CTX‐M‐15‐encoding conjugative plasmids in Klebsiella pneumoniae

    Article • Apmis, March 2012, Wiley

    karen a krogfelt

  64. The Streptomycin-Treated Mouse Intestine SelectsEscherichia coli envZMissense Mutants That Interact with Dense and Diverse Intestinal Microbiota

    Article • Infection and Immunity, March 2012, ASM Journals

    karen a krogfelt

  65. Comparison of two commercially available ELISA antibody test kits for detection of human antibodies against Coxiella burnetii

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

    karen a krogfelt

  66. Presence of Antibodies Against Coxiella burnetii and Risk of Spontaneous Abortion: A Nested Case-Control Study

    Article • PLoS ONE, February 2012, PLOS

    karen a krogfelt

  67. Impact of Pseudomonas aeruginosa quorum sensing on cellular wound healing responses in vitro

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

    karen a krogfelt

  68. The insect defensin lucifensin from Lucilia sericata

    Article • Journal of Biomolecular NMR, February 2012, Springer Science + Business Media

    karen a krogfelt

  69. Gut inflammation can boost horizontal gene transfer between pathogenic and commensal Enterobacteriaceae

    Article • Proceedings of the National Academy of Sciences, January 2012, Proceedings of the National Academy of Sciences

    karen a krogfelt, Professor Ulrich Dobrindt

  70. Genomic Characterization of Enteroaggregative Escherichia coli From Children in Mali

    Article • The Journal of Infectious Diseases, December 2011, Oxford University Press (OUP)

    karen a krogfelt

  71. Investigation of the early intestinal microflora in premature infants with/without necrotizing enterocolitis using two different methods

    Article • Pediatric Research, December 2011, Springer Science + Business Media

    karen a krogfelt

  72. Seroreactivity toE. coliouter membrane protein C antibodies in active inflammatory bowel disease; diagnostic value and correlation with phylogroup B2E. coliinfection

    Article • Scandinavian Journal of Gastroenterology, December 2011, Taylor & Francis

    karen a krogfelt

  73. Identification of Immunogenic and Virulence-Associated Campylobacter jejuni Proteins

    Article • Clinical and Vaccine Immunology, December 2011, ASM Journals

    karen a krogfelt

  74. No need for biopsies: comparison of three sample techniques for wound microbiota determination

    Article • International Wound Journal, November 2011, Wiley

    karen a krogfelt

  75. Silver resistance: an alarming public health concern?

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

    karen a krogfelt

  76. Laboratory diagnosis of pertussis: Agglutination is not suitable

    Article • Respirology, October 2011, Wiley

    karen a krogfelt

  77. Enteroaggregative Escherichia coli promotes transepithelial migration of neutrophils through a conserved 12-lipoxygenase pathway

    Article • Cellular Microbiology, October 2011, Wiley

    karen a krogfelt

  78. Detecting non-typhoid Salmonella in humans by ELISAs: a literature review

    Article • Journal of Medical Microbiology, October 2011, Society for General Microbiology

    karen a krogfelt

  79. Klebsiella pneumoniae type 3 fimbriae agglutinate yeast in a mannose-resistant manner

    Article • Journal of Medical Microbiology, October 2011, Society for General Microbiology

    karen a krogfelt

  80. Reduced diversity of the intestinal microbiota during infancy is associated with increased risk of allergic disease at school age

    Article • Journal of Allergy and Clinical Immunology, September 2011, Elsevier

    karen a krogfelt

  81. Origins of the E. coli Strain Causing an Outbreak of Hemolytic–Uremic Syndrome in Germany

    Article • New England Journal of Medicine, August 2011, New England Journal of Medicine (NEJM/MMS)

    karen a krogfelt

  82. Treatment of Inflammatory Bowel Disease Associated E. coli with Ciprofloxacin and E. coli Nissle in the Streptomycin-Treated Mouse Intestine

    Article • PLoS ONE, August 2011, PLOS

    karen a krogfelt

  83. The role of Campylobacter jejuni cytolethal distending toxin in gastroenteritis: toxin detection, antibody production, and clinical outcome

    Article • Apmis, June 2011, Wiley

    karen a krogfelt

  84. Comparative genomics of Escherichia coli isolated from patients with inflammatory bowel disease

    Article • BMC Genomics, June 2011, Springer Science + Business Media

    karen a krogfelt

  85. The newly discovered ClpK protein strongly promotes survival of Klebsiella pneumoniae biofilm subjected to heat shock

    Article • Journal of Medical Microbiology, May 2011, Society for General Microbiology

    karen a krogfelt

  86. Epidemiology and Clinical Features of Human Infection with Coxiella burnetii in Denmark During 2006–07

    Article • Zoonoses and Public Health, May 2011, Wiley

    karen a krogfelt

  87. Optimising Bacterial DNA Extraction from Faecal Samples: Comparison of Three Methods

    Article • The Open Microbiology Journal, April 2011, Bentham Science Publishers

    karen a krogfelt

  88. Community analysis of bacteria colonizing intestinal tissue of neonates with necrotizing enterocolitis

    Article • BMC Microbiology, April 2011, Springer Science + Business Media

    karen a krogfelt, Professor Mette Boye

  89. The continuing search for Mycobacterium tuberculosis involvement in sarcoidosis: a study on archival biopsy specimens

    Article • The Clinical Respiratory Journal, March 2011, Wiley

    karen a krogfelt

  90. Is sarcoidosis a rickettsiosis? An archival study

    Article • Scandinavian Journal of Infectious Diseases, February 2011, Taylor & Francis

    karen a krogfelt

  91. Detection of Legionella by quantitative-polymerase chain reaction (qPCR) for monitoring and risk assessment

    Article • BMC Microbiology, January 2011, Springer Science + Business Media

    karen a krogfelt

  92. Assessment of Bacterial Antibiotic Resistance Transfer in the Gut

    Article • International Journal of Microbiology, January 2011, Hindawi Publishing Corporation

    karen a krogfelt

  93. Investigating the humoral immune response in chronic venous leg ulcer patients colonised with Pseudomonas aeruginosa

    Article • International Wound Journal, November 2010, Wiley

    karen a krogfelt

  94. Heat Resistance Mediated by a New Plasmid Encoded Clp ATPase, ClpK, as a Possible Novel Mechanism for Nosocomial Persistence of Klebsiella pneumoniae

    Article • PLoS ONE, November 2010, PLOS

    karen a krogfelt

  95. Seroprevalence of Pertussis among Danish Patients with Cough of Unknown Etiology

    Article • Clinical and Vaccine Immunology, October 2010, ASM Journals

    karen a krogfelt

  96. Pertussis serology: assessment of IgG anti‐PT ELISA for replacement of the CHO cell assay*

    Article • Apmis, September 2010, Wiley

    karen a krogfelt

  97. Skin wound healing in diabetic β6 integrin‐deficient mice

    Article • Apmis, August 2010, Wiley

    karen a krogfelt

  98. Expanding the Diagnostic Use of PCR in Leptospirosis: Improved Method for DNA Extraction from Blood Cultures

    Article • PLoS ONE, August 2010, PLOS

    karen a krogfelt

  99. Role of type 1 and type 3 fimbriae in Klebsiella pneumoniae biofilm formation

    Article • BMC Microbiology, June 2010, Springer Science + Business Media

    karen a krogfelt

  100. A novel approach to the antimicrobial activity of maggot debridement therapy

    Article • Journal of Antimicrobial Chemotherapy, June 2010, Oxford University Press (OUP)

    karen a krogfelt

  101. Seasonal and habitat variation in the prevalence of Rickettsia helvetica in Ixodes ricinus ticks from Denmark

    Article • Ticks and Tick-borne Diseases, June 2010, Elsevier

    karen a krogfelt

  102. Antibody responses to pertussis toxin display different kinetics after clinical Bordetella pertussis infection than after vaccination with an acellular pertussis vaccine

    Article • Journal of Medical Microbiology, May 2010, Society for General Microbiology

    karen a krogfelt

  103. M1760 The Colonizing Ability of E. coli Strains Isolated From Patients With Inflammatory Bowel Disease

    Article • Gastroenterology, May 2010, Elsevier

    karen a krogfelt

  104. Screening for genes involved in Klebsiella pneumoniae biofilm formation using a fosmid library

    Article • FEMS Immunology & Medical Microbiology, April 2010, Oxford University Press (OUP)

    karen a krogfelt

  105. Usefulness of seroconversion rates for comparing infection pressures between countries

    Article • Epidemiology and Infection, April 2010, Cambridge University Press

    karen a krogfelt

  106. Early effectiveness of heptavalent conjugate pneumococcal vaccination on invasive pneumococcal disease after the introduction in the Danish Childhood Immunization Programme

    Article • Vaccine, March 2010, Elsevier

    karen a krogfelt

  107. Temporal Trends in Invasive Pneumococcal Disease and Pneumococcal Serotypes over 7 Decades

    Article • Clinical Infectious Diseases, February 2010, Oxford University Press (OUP)

    karen a krogfelt

  108. MLST clustering ofCampylobacter jejuniisolates from patients with gastroenteritis, reactive arthritis and Guillain–Barré syndrome

    Article • Journal of Applied Microbiology, February 2010, Oxford University Press (OUP)

    karen a krogfelt

  109. Low translocation ofBacillus thuringiensisisraelensisto inner organs in mice after pulmonary exposure to commercial biopesticide

    Article • Biocontrol Science and Technology, January 2010, Taylor & Francis

    karen a krogfelt

  110. Quorum-sensing-regulated virulence factors in Pseudomonas aeruginosa are toxic to Lucilia sericata maggots

    Article • Microbiology, November 2009, Society for General Microbiology

    karen a krogfelt

  111. Nonrandom Distribution of Pseudomonas aeruginosa and Staphylococcus aureus in Chronic Wounds

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

    karen a krogfelt

  112. Determination of new cutoff values for indirect immunofluorescence antibody test for Q fever diagnosis in Denmark

    Article • Diagnostic Microbiology and Infectious Disease, October 2009, Elsevier

    karen a krogfelt

  113. Sialylation of Campylobacter jejuni lipo-oligosaccharides is associated with severe gastro-enteritis and reactive arthritis

    Article • Microbes and Infection, October 2009, Elsevier

    karen a krogfelt

  114. Comparative Structure-Function Analysis of Mannose-Specific FimH Adhesins from Klebsiella pneumoniae and Escherichia coli

    Article • Journal of Bacteriology, September 2009, ASM Journals

    karen a krogfelt

  115. Identification of a Conserved Chromosomal Region Encoding Klebsiella pneumoniae Type 1 and Type 3 Fimbriae and Assessment of the Role of Fimbriae in Pathogenicity

    Article • Infection and Immunity, August 2009, ASM Journals

    karen a krogfelt

  116. Evaluation of the Specificity of Pneumococcal Polysaccharide Enzyme-Linked Immunosorbent Assay and the Effect of Serum Adsorption Based on Standard Pneumococcal Serogroup- or Serotype-Specific Rabbit Antisera

    Article • Clinical and Vaccine Immunology, July 2009, ASM Journals

    karen a krogfelt

  117. Pneumococcal Serotypes and Mortality following Invasive Pneumococcal Disease: A Population-Based Cohort Study

    Article • PLoS Medicine, May 2009, PLOS

    karen a krogfelt

  118. Estimation of incidences of infectious diseases based on antibody measurements

    Article • Statistics in Medicine, April 2009, Wiley

    karen a krogfelt

  119. Problem solved: a modified enzyme-linked immunosorbent assay for detection of human antibodies to pertussis toxin eliminates false-positive results occurring at analysis of heat-treated sera

    Article • Diagnostic Microbiology and Infectious Disease, April 2009, Elsevier

    karen a krogfelt

  120. Screening Escherichia coli, Enterococcus faecalis, and Clostridium perfringens as Indicator Organisms in Evaluating Pathogen-Reducing Capacity in Biogas Plants

    Article • Microbial Ecology, March 2009, Springer Science + Business Media

    karen a krogfelt

  121. Evaluation of serological tests for the diagnosis of rickettsiosis in Denmark

    Article • Journal of Microbiological Methods, March 2009, Elsevier

    karen a krogfelt

  122. A novel fluorescent in situ hybridization technique for detection of Rickettsia spp. in archival samples

    Article • Journal of Microbiological Methods, March 2009, Elsevier

    karen a krogfelt, Professor Mette Boye

  123. Population Variability of the FimH Type 1 Fimbrial Adhesin in Klebsiella pneumoniae

    Article • Journal of Bacteriology, January 2009, ASM Journals

    karen a krogfelt

  124. Detection of Rickettsia spp. in Danish ticks (Acari: Ixodes ricinus) using real-time PCR

    Article • Scandinavian Journal of Infectious Diseases, January 2009, Taylor & Francis

    karen a krogfelt

  125. A phylogenetic group of Escherichia coli associated with active left-sided Inflammatory Bowel Disease

    Article • BMC Microbiology, January 2009, Springer Science + Business Media

    karen a krogfelt

  126. A prospective study evaluating the presence of Rickettsia in Danish patients with sarcoidosis

    Article • Scandinavian Journal of Infectious Diseases, January 2009, Taylor & Francis

    karen a krogfelt

  127. Determination of rickettsial and antinuclear antibodies in Danish patients with sarcoidosis

    Article • The Clinical Respiratory Journal, September 2008, Wiley

    karen a krogfelt

  128. Ficolins and Mannose-Binding Lectin in Danish patients with sarcoidosis

    Article • Respiratory Medicine, September 2008, Elsevier

    karen a krogfelt

  129. Complete Genome Sequence of the N2-Fixing Broad Host Range Endophyte Klebsiella pneumoniae 342 and Virulence Predictions Verified in Mice

    Article • PLoS Genetics, July 2008, PLOS

    karen a krogfelt, Professor Luiz F W Roesch

  130. Transfer of antimicrobial resistance plasmids from Klebsiella pneumoniae to Escherichia coli in the mouse intestine

    Article • Journal of Antimicrobial Chemotherapy, July 2008, Oxford University Press (OUP)

    karen a krogfelt

  131. Estimated effect of pneumococcal conjugate vaccination on invasive pneumococcal disease and associated mortality, Denmark 2000–2005

    Article • Vaccine, July 2008, Elsevier

    karen a krogfelt

  132. Host-Pathogen Interactions in Campylobacter Infections: the Host Perspective

    Article • Clinical Microbiology Reviews, July 2008, ASM Journals

    karen a krogfelt

  133. Characterization of Klebsiella pneumoniae Type 1 Fimbriae by Detection of Phase Variation during Colonization and Infection and Impact on Virulence

    Article • Infection and Immunity, June 2008, ASM Journals

    karen a krogfelt

  134. New Adhesin of Enteroaggregative Escherichia coli Related to the Afa/Dr/AAF Family

    Article • Infection and Immunity, April 2008, ASM Journals

    karen a krogfelt

  135. A Case of Helicobacter cinaedi Bacteraemia in a Previously Healthy Person with Cellulitis

    Article • The Open Microbiology Journal, April 2008, Bentham Science Publishers

    karen a krogfelt

  136. Glycogen and Maltose Utilization by Escherichia coli O157:H7 in the Mouse Intestine

    Article • Infection and Immunity, March 2008, ASM Journals

    karen a krogfelt

  137. Selective pressure affects transfer and establishment of a Lactobacillus plantarum resistance plasmid in the gastrointestinal environment

    Article • Journal of Antimicrobial Chemotherapy, February 2008, Oxford University Press (OUP)

    karen a krogfelt

  138. Why chronic wounds will not heal: a novel hypothesis

    Article • Wound Repair and Regeneration, October 2007, Wiley

    karen a krogfelt

  139. Attaching and effacing Escherichia coli isolates from Danish children: clinical significance and microbiological characteristics

    Article • Clinical Microbiology and Infection, September 2007, Elsevier

    karen a krogfelt, Dr Bente Olesen

  140. Validation of an ELISA for the diagnosis of recent Campylobacter infections in Guillain–Barré and reactive arthritis patients

    Article • Clinical Microbiology and Infection, September 2007, Elsevier

    karen a krogfelt

  141. Sero-epidemiology as a tool to study the incidence of Salmonella infections in humans

    Article • Epidemiology and Infection, August 2007, Cambridge University Press

    karen a krogfelt

  142. Helicobacter canis bacteraemia in a 7-month-old child

    Article • FEMS Immunology & Medical Microbiology, July 2007, Oxford University Press (OUP)

    karen a krogfelt

  143. A method for fast and simple detection of major diarrhoeagenic Escherichia coli in the routine diagnostic laboratory

    Article • Clinical Microbiology and Infection, May 2007, Elsevier

    karen a krogfelt

  144. Bacterial profiling using skin grafting, standard culture and molecular bacteriological methods

    Article • Journal of Wound Care, April 2007, Mark Allen Group

    karen a krogfelt

  145. P1144 Antibody decay profiles during Yersinia enterocolitica O:3 infections: a follow-up study of 94 patients

    Article • International Journal of Antimicrobial Agents, March 2007, Elsevier

    karen a krogfelt

  146. Developing an ELISA using serotype-specific antigens from selected pneumococcal strains of own selection

    Article • Vaccine, March 2007, Elsevier

    karen a krogfelt

  147. Kinetics of the Human Antibody Response against Salmonella enterica Serovars Enteritidis and Typhimurium Determined by Lipopolysaccharide Enzyme-Linked Immunosorbent Assay

    Article • Clinical and Vaccine Immunology, February 2007, ASM Journals

    karen a krogfelt

  148. No Serological Evidence for Rickettsial Diseases among Danish Elite Orienteerers

    Article • Annals of the New York Academy of Sciences, October 2006, Wiley

    karen a krogfelt

  149. Erratum to “Rapid decay of Salmonella flagella antibodies during human gastroenteritis: A follow up study” [J. Microbiol. Methods 62 (2005) 233–243]

    Article • Journal of Microbiological Methods, September 2006, Elsevier

    karen a krogfelt

  150. Multiple bacterial species reside in chronic wounds: a longitudinal study

    Article • International Wound Journal, September 2006, Wiley

    karen a krogfelt

  151. In Vitro Biofilm Formation of Commensal and Pathogenic Escherichia coli Strains: Impact of Environmental and Genetic Factors

    Article • Journal of Bacteriology, May 2006, ASM Journals

    karen a krogfelt

  152. Helicobacter pylori Antimicrobial Resistance and Risk Factors in Denmark 1998–2004: No Need for Concern?

    Article • Helicobacter, May 2006, Wiley

    karen a krogfelt

  153. Mouse Intestine Selects Nonmotile flhDC Mutants of Escherichia coli MG1655 with Increased Colonizing Ability and Better Utilization of Carbon Sources

    Article • Infection and Immunity, December 2005, ASM Journals

    karen a krogfelt

  154. Seroprevalence and Risk Factors for Helicobacter pylori Infection in Greenlanders

    Article • Helicobacter, September 2005, Wiley

    karen a krogfelt

  155. Diagnosis of Helicobacter pylori Infection

    Article • Helicobacter, September 2005, Wiley

    karen a krogfelt

  156. Rapid decay of Salmonella flagella antibodies during human gastroenteritis: A follow up study

    Article • Journal of Microbiological Methods, August 2005, Elsevier

    karen a krogfelt

  157. Capsule and Fimbria Interaction in Klebsiella pneumoniae

    Article • Infection and Immunity, August 2005, ASM Journals

    karen a krogfelt

  158. Etiology of Diarrhea in Young Children in Denmark: a Case-Control Study

    Article • Journal of Clinical Microbiology, August 2005, ASM Journals

    karen a krogfelt, Dr Bente Olesen

  159. Pathogenesis and host response in Helicobacter infections

    Article • FEMS Immunology & Medical Microbiology, May 2005, Oxford University Press (OUP)

    karen a krogfelt

  160. The Life of Commensal Escherichia coli in the Mammalian Intestine

    Article • EcoSal Plus, December 2004, ASM Journals

    karen a krogfelt

  161. N4-alkyloxycarbonyl derivatives of cytosine: physicochemical characterisation, and cytosine regeneration rates and release from alginic acid gels

    Article • European Journal of Pharmaceutical Sciences, December 2004, Elsevier

    karen a krogfelt

  162. Low seroprevalence of Bartonella species in danish elite orienteers

    Article • Scandinavian Journal of Infectious Diseases, August 2004, Taylor & Francis

    karen a krogfelt

  163. Pathogenic potential of environmental Klebsiella pneumoniae isolates

    Article • Environmental Microbiology, June 2004, Wiley

    karen a krogfelt

  164. Bartonella henselae causing severe and protracted illness in an otherwise healthy person

    Article • Scandinavian Journal of Infectious Diseases, April 2004, Taylor & Francis

    karen a krogfelt

  165. Helicobacter pylori infection in Greenlandic patients with dyspepsia

    Article • International Journal of Circumpolar Health, March 2004, Co-Action Publishing

    karen a krogfelt

  166. Editorial

    Article • FEMS Immunology & Medical Microbiology, May 2003, Oxford University Press (OUP)

    karen a krogfelt

  167. Helicobacter pylori: an invading microorganism? A review

    Article • FEMS Immunology & Medical Microbiology, May 2003, Oxford University Press (OUP)

    karen a krogfelt

  168. Evidence of increased spread and establishment of plasmid RP4 in the intestine under sub-inhibitory tetracycline concentrations

    Article • FEMS Microbiology Ecology, May 2003, Oxford University Press (OUP)

    karen a krogfelt

  169. An Escherichia coli MG1655 Lipopolysaccharide Deep-Rough Core Mutant Grows and Survives in Mouse Cecal Mucus but Fails To Colonize the Mouse Large Intestine

    Article • Infection and Immunity, April 2003, ASM Journals

    karen a krogfelt

  170. Role of capsule in Klebsiella pneumoniae virulence: lack of correlation between in vitro and in vivo studies

    Article • FEMS Microbiology Letters, January 2003, Oxford University Press (OUP)

    karen a krogfelt

  171. Hydrophilic Carboxylic Acids and Iridoid Glycosides in the Juice of American and European Cranberries (Vaccinium macrocarpon and V. oxycoccos), Lingonberries (V. vitis-idaea), and Blueberries (V. myrtillus)

    Article • Journal of Agricultural and Food Chemistry, October 2002, American Chemical Society (ACS)

    karen a krogfelt, Professor Søren Brøgger Christensen

  172. Lysophosphatidic acid inhibition of the accumulation of Pseudomonas aeruginosa PAO1 alginate, pyoverdin, elastase and LasA

    Article • Microbiology, June 2002, Society for General Microbiology

    karen a krogfelt

  173. Helicobacter pylori: molecular and cellular biology

    Article • International Journal of Food Microbiology, September 2001, Elsevier

    karen a krogfelt

  174. The osmotic stress response and virulence in pyelonephritis isolates of Escherichia coli: contributions of RpoS, ProP, ProU and other systems

    Article • Microbiology, June 2001, Society for General Microbiology

    karen a krogfelt

  175. Reduced intracellular survival of Helicobacter pylori vacA mutants in comparison with their wild-types indicates the role of VacA in pathogenesis

    Article • FEMS Immunology & Medical Microbiology, March 2001, Oxford University Press (OUP)

    karen a krogfelt

  176. N-Acyl-l-Homoserine Lactone-Mediated Regulation of the Lip Secretion System inSerratia liquefaciens MG1

    Article • Journal of Bacteriology, March 2001, ASM Journals

    karen a krogfelt

  177. Antibody Responses to CampylobacterInfections Determined by an Enzyme-Linked Immunosorbent Assay: 2-Year Follow-Up Study of 210 Patients

    Article • Clinical and Diagnostic Laboratory Immunology, March 2001, ASM Journals

    karen a krogfelt

  178. Histochemical Tracing of Bismuth in Helicobacter pylori after In Vitro Exposure to Bismuth Citrate

    Article • Scandinavian Journal of Gastroenterology, February 2001, Taylor & Francis

    karen a krogfelt

  179. [2] Monitoring bacterial growth activity in biofilms from laboratory flow chambers, plant rhizosphere, and animal intestine

    Article • January 2001, Elsevier

    karen a krogfelt

  180. Specific phospholipids enhance the activity of beta-lactam antibiotics against Pseudomonas aeruginosa

    Article • Journal of Antimicrobial Chemotherapy, September 2000, Oxford University Press (OUP)

    karen a krogfelt

  181. Role of strain type, AGS cells and fetal calf serum in Helicobacter pylori adhesion and invasion assays

    Article • FEMS Immunology & Medical Microbiology, September 2000, Oxford University Press (OUP)

    karen a krogfelt

  182. A Functional cra Gene Is Required forSalmonella enterica Serovar Typhimurium Virulence in BALB/c Mice

    Article • Infection and Immunity, June 2000, ASM Journals

    karen a krogfelt, Derek J Brown

  183. rpoS Gene Function Is a Disadvantage forEscherichia coli BJ4 during Competitive Colonization of the Mouse Large Intestine

    Article • Infection and Immunity, May 2000, ASM Journals

    karen a krogfelt

  184. Development of a Long-Term Ascending Urinary Tract Infection Mouse Model for Antibiotic Treatment Studies

    Article • Antimicrobial Agents and Chemotherapy, January 2000, ASM Journals

    karen a krogfelt

  185. In vivo detection of Escherichia coli type 1 fimbrial expression and phase variation during experimental urinary tract infection

    Article • Microbiology, October 1999, Society for General Microbiology

    karen a krogfelt

  186. Plasmid transfer in the animal intestine and other dynamic bacterial populations: the role of community structure and environment

    Article • Microbiology, September 1999, Society for General Microbiology

    karen a krogfelt

  187. Molecular methods for typing of Helicobacter pylori and their applications

    Article • FEMS Immunology & Medical Microbiology, June 1999, Oxford University Press (OUP)

    karen a krogfelt

  188. Helicobacter pylori and risk of ulcer bleeding among users of nonsteroidal anti-inflammatory drugs: A case-control study☆, ☆☆

    Article • Gastroenterology, June 1999, Elsevier

    karen a krogfelt

  189. Helicobacter pylori detection in human biopsies: a competitive PCR assay with internal control reveals false results

    Article • FEMS Immunology & Medical Microbiology, June 1999, Oxford University Press (OUP)

    karen a krogfelt

  190. Inhibition of Escherichia coli precursor‐16S rRNA processing by mouse intestinal contents

    Article • Environmental Microbiology, February 1999, Wiley

    karen a krogfelt

  191. Pathogenic adaptation of Escherichia coli by natural variation of the FimH adhesin

    Article • Proceedings of the National Academy of Sciences, July 1998, Proceedings of the National Academy of Sciences

    karen a krogfelt

  192. A Salmonella typhimurium mutant unable to utilize fatty acids and citrate is avirulent and immunogenic in mice

    Article • FEMS Microbiology Letters, June 1998, Oxford University Press (OUP)

    karen a krogfelt

  193. Lipopolysaccharide’s Role in the Association of Salmonella Cells to the Mouse Intestine Studied By Ribosomal in Situ Hybridization

    Article • January 1996, Springer Science + Business Media

    karen a krogfelt

  194. Development of a PCR-based technique for detection of Helicobacter pylori

    Article • FEMS Immunology & Medical Microbiology, February 1995, Oxford University Press (OUP)

    karen a krogfelt

  195. [5] Adhesin-dependent isolation and characterization of bacteria from their natural environment

    Article • January 1995, Elsevier

    karen a krogfelt

  196. Stimulation of Escherichia coli F-18Col − type-1 fimbriae synthesis by leuX

    Article • FEMS Microbiology Letters, October 1994, Oxford University Press (OUP)

    karen a krogfelt

  197. Escherichia coli F-18 phase locked 'on' for expression of type 1 fimbriae is a poor colonizer of the streptomycin-treated mouse large intestine

    Article • Microbial Pathogenesis, January 1993, Elsevier

    karen a krogfelt

  198. Bacterial Adhesion: Genetics, Biogenesis, and Role in Pathogenesis of Fimbrial Adhesins of Escherichia coli

    Article • Clinical Infectious Diseases, July 1991, Oxford University Press (OUP)

    karen a krogfelt

  199. Molecular Biology of Escherichia coli Type 1 Fimbriae

    Article • January 1991, Springer Science + Business Media

    karen a krogfelt

  200. Expression of Type 1 Fimbriae by E. coli F18 in the Streptomycin-Treated Mouse Large Intestine

    Article • January 1991, Springer Science + Business Media

    karen a krogfelt

  201. The major subunit of Escherichia coli type 1 fimbriae is not required for D‐mannose‐specific adhesion

    Article • Molecular Microbiology, April 1990, Wiley

    karen a krogfelt

  202. Investigation of minor components of Escherichia coli Type 1 Fimbriae: protein chemical and immunological aspects

    Article • Microbial Pathogenesis, March 1988, Elsevier

    karen a krogfelt

  203. K88 fimbrial antigens: identification of antigenic determinants by the use of synthetic peptides

    Article • Microbial Pathogenesis, June 1987, Elsevier

    karen a krogfelt, Prof. Morten Meldal