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K. E. Olsen · SciRah

Researcher profile · Semantic Scholar

K. E. Olsen

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K. E. Olsen — researcher profile on SciRah

h-index: 29
Works: 52
Citations: 3,310

Most-cited papers

Subtyping Method for Escherichia coli Shiga Toxin (Verocytotoxin) 2 Variants and Correlations to Clinical Manifestations
S. Persson, K. E. Olsen, S. Ethelberg, F. Scheutz
2007Journal of Clinical Microbiology330 citations Open access
Semantic Scholar
New multiplex PCR method for the detection of Clostridium difficile toxin A (tcdA) and toxin B (tcdB) and the binary toxin (cdtA/cdtB) genes applied to a Danish strain collection.
S. Persson, M. Torpdahl, K. E. Olsen
2008Clinical Microbiology and Infection309 citations Open access
Semantic Scholar
Virulence Factors for Hemolytic Uremic Syndrome, Denmark
S. Ethelberg, K. E. Olsen, F. Scheutz, C. Jensen +6 more
2004Emerging Infectious Diseases288 citations Open access
Semantic Scholar
Multiplex PCR for identification of Campylobacter coli and Campylobacter jejuni from pure cultures and directly on stool samples.
S. Persson, K. E. Olsen
2005Journal of Medical Microbiology182 citations Open access
Semantic Scholar
Etiology of Diarrhea in Young Children in Denmark: a Case-Control Study
B. Olesen, J. Neimann, B. Böttiger, S. Ethelberg +9 more
2005Journal of Clinical Microbiology181 citations Open access
Semantic Scholar
Adverse health events associated with antimicrobial drug resistance in Campylobacter species: a registry-based cohort study.
M. Helms, J. Simonsen, K. E. Olsen, K. Mølbak
2005Journal of Infectious Diseases169 citations Open access
Semantic Scholar
Update of Clostridium difficile-associated disease due to PCR ribotype 027 in Europe.
E. Kuijper, B. Coignard, J. Brazier, C. Suetens +19 more
2007Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin166 citations Open access
Semantic Scholar
Escherichia coli Isolates from Broiler Chicken Meat, Broiler Chickens, Pork, and Pigs Share Phylogroups and Antimicrobial Resistance with Community-Dwelling Humans and Patients with Urinary Tract Infection
L. Jakobsen, A. Kurbasic, L. Skjøt-Rasmussen, Karen Ejrnæs +9 more
2010Foodborne pathogens and disease154 citations
Semantic Scholar
Binary toxin and death after Clostridium difficile infection.
S. Bacci, K. Mølbak, M. K. Kjeldsen, K. E. Olsen
2011Emerging Infectious Diseases153 citations Open access
Semantic Scholar
Occurrence of Campylobacter jejuni in Pets Living with Human Patients Infected with C. jejuni
P. Damborg, K. E. Olsen, E. Møller Nielsen, L. Guardabassi
2004Journal of Clinical Microbiology99 citations Open access
Semantic Scholar
A method for fast and simple detection of major diarrhoeagenic Escherichia coli in the routine diagnostic laboratory.
S. Persson, K. E. Olsen, F. Scheutz, K. A. Krogfelt +1 more
2007Clinical Microbiology and Infection94 citations Open access
Semantic Scholar
Multiplex PCR Method for Detection of Clostridium difficile tcdA, tcdB, cdtA, and cdtB and Internal In-Frame Deletion of tcdC
S. Persson, J. N. Jensen, K. E. Olsen
2011Journal of Clinical Microbiology80 citations Open access
Semantic Scholar
Identification of Clinical Aeromonas Species by rpoB and gyrB Sequencing and Development of a Multiplex PCR Method for Detection of Aeromonas hydrophila, A. caviae, A. veronii, and A. media
S. Persson, Suzan Al-Shuweli, Seval Yapici, J. N. Jensen +1 more
2014Journal of Clinical Microbiology78 citations Open access
Semantic Scholar
Spatial distribution and registry-based case-control analysis of Campylobacter infections in Denmark, 1991-2001.
S. Ethelberg, J. Simonsen, P. Gerner-Smidt, K. E. Olsen +1 more
2005American Journal of Epidemiology73 citations
Semantic Scholar
Risk Factors for Diarrhea Among Children in an Industrialized Country
S. Ethelberg, B. Olesen, J. Neimann, P. Schiellerup +7 more
2006Epidemiology66 citations Open access
Semantic Scholar
Standardised surveillance of Clostridium difficile infection in European acute care hospitals: a pilot study, 2013.
S. V. van Dorp, P. Kinross, P. Gastmeier, M. Behnke +16 more
2016Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin63 citations Open access
Semantic Scholar
Binary Toxin and Death after Clostridium difficile Infection
S. Bacci, K. Mølbak, M. K. Kjeldsen, K. E. Olsen
2011Emerging Infectious Diseases63 citations Open access
Semantic Scholar
Prevalence and Characterization of Motile Salmonella in Commercial Layer Poultry Farms in Bangladesh
H. Barua, P. Biswas, K. E. Olsen, J. Christensen
2012PLoS ONE61 citations Open access
Semantic Scholar
Household outbreaks among culture-confirmed cases of bacterial gastrointestinal disease.
S. Ethelberg, K. E. Olsen, P. Gerner-Smidt, K. Mølbak
2004American Journal of Epidemiology60 citations
Semantic Scholar
Outbreaks of Shigella sonnei infections in Denmark and Australia linked to consumption of imported raw baby corn
H. Lewis, S. Ethelberg, K. E. Olsen, E. M. Nielsen +14 more
2009Epidemiology and Infection54 citations Open access
Semantic Scholar
Fatal enterocolitis in Asian elephants (Elephas maximus) caused by Clostridium difficile.
A. Bojesen, K. E. Olsen, M. Bertelsen
2006Veterinary Microbiology49 citations
Semantic Scholar
Molecular Characterization of Motile Serovars of Salmonella enterica from Breeder and Commercial Broiler Poultry Farms in Bangladesh
H. Barua, P. Biswas, K. E. Olsen, S. Shil +1 more
2013PLoS ONE45 citations Open access
Semantic Scholar
Antimicrobial Drug Resistance of Salmonella Isolates from Meat and Humans, Denmark
M. Skov, J. S. Andersen, S. Aabo, S. Ethelberg +8 more
2007Emerging Infectious Diseases45 citations Open access
Semantic Scholar
Prevalence of sulphonamide resistance and class 1 integron genes in Escherichia coli isolates obtained from broilers, broiler meat, healthy humans and urinary infections in Denmark.
M. Trobos, L. Jakobsen, K. E. Olsen, N. Frimodt-Møller +5 more
2008International Journal of Antimicrobial Agents40 citations Open access
Semantic Scholar
A vancomycin-resistant Enterococcus faecium isolate from a Danish healthy volunteer, detected 7 years after the ban of avoparcin, is possibly related to pig isolates.
A. Hammerum, Camilla H. Lester, J. Neimann, L. J. Porsbo +5 more
2004Journal of Antimicrobial Chemotherapy36 citations Open access
Semantic Scholar
Five commercial DNA extraction systems tested and compared on a stool sample collection.
S. Persson, R. D. de Boer, A. Kooistra-Smid, K. E. Olsen
2011Diagnostic microbiology and infectious disease35 citations
Semantic Scholar
Subtype-Specific Suppression of Shiga Toxin 2 Released from Escherichia coli upon Exposure to Protein Synthesis Inhibitors
Malene Gantzhorn Pedersen, C. Hansen, E. Riise, S. Persson +1 more
2008Journal of Clinical Microbiology34 citations Open access
Semantic Scholar
Poultry as a possible source of non-typhoidal Salmonella enterica serovars in humans in Bangladesh.
H. Barua, P. Biswas, K. Talukder, K. E. Olsen +1 more
2014Veterinary Microbiology32 citations
Semantic Scholar
Vancomycin-resistant Enterococcus faecalis isolates from a Danish patient and two healthy human volunteers are possibly related to isolates from imported turkey meat.
Y. Agersø, Camilla H. Lester, L. J. Porsbo, Iben Orsted +7 more
2008Journal of Antimicrobial Chemotherapy29 citations Open access
Semantic Scholar
Palmitoylation of the Intracytoplasmic R Peptide of the Transmembrane Envelope Protein in Moloney Murine Leukemia Virus
K. E. Olsen, K. B. Andersen
1999Journal of Virology28 citations Open access
Semantic Scholar
Diagnosis of Clostridium difficile: real-time PCR detection of toxin genes in faecal samples is more sensitive compared to toxigenic culture
M. B. F. Jensen, K. E. Olsen, X. Nielsen, A. M. Hoegh +3 more
2014European Journal of Clinical Microbiology and Infectious Diseases27 citations Open access
Semantic Scholar
VTEC O117:K1:H7 A new clonal group of E. coli associated with persistent diarrhoea in Danish travellers
B. Olesen, C. Jensen, K. E. Olsen, V. Fussing +2 more
2005Scandinavian Journal of Infectious Diseases27 citations
Semantic Scholar
VTEC O157 subtypes associated with the most severe clinical symptoms in humans constitute a minor part of VTEC O157 isolates from Danish cattle.
B. Roldgaard, F. Scheutz, Jeppe Boel, S. Aabo +5 more
2004International Journal of Medical Microbiology26 citations
Semantic Scholar
Association between antimicrobial resistance and virulence genes in Escherichia coli obtained from blood and faeces
Line Bagger-Skjøt, D. Sandvang, N. Frimodt-Møller, Camilla H. Lester +4 more
2007Scandinavian Journal of Infectious Diseases25 citations
Semantic Scholar
The emergence of Clostridium difficile PCR ribotype 027 in Denmark--a possible link with the increased consumption of fluoroquinolones and cephalosporins?
L. Søes, K. Mølbak, S. Strøbaek, K. T. Jensen +4 more
2009Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin21 citations Open access
Semantic Scholar
The significance of the number of submitted samples and patient-related factors for faecal bacterial diagnostics.
S. Ethelberg, K. E. Olsen, P. Gerner-Smidt, K. Mølbak
2007Clinical Microbiology and Infection20 citations Open access
Semantic Scholar
Molecular Characterization Reveals Similar Virulence Gene Content in Unrelated Clonal Groups of Escherichia coli of Serogroup O174 (OX3)
C. Tarr, Adam M. Nelson, L. Beutin, K. E. Olsen +1 more
2007Journal of Bacteriology16 citations Open access
Semantic Scholar
Antimicrobial treatment of asymptomatic carriers of verocytotoxin-producing Escherichia coli: An empiric study
C. Jensen, P. Schiellerup, K. E. Olsen, F. Scheutz +3 more
2005Scandinavian Journal of Infectious Diseases16 citations
Semantic Scholar
The incidence and clinical symptomatology of Clostridium difficile infections in a community setting in a cohort of Danish patients attending general practice
L. Søes, H. M. Holt, B. Böttiger, H. V. Nielsen +7 more
2014European Journal of Clinical Microbiology and Infectious Diseases15 citations
Semantic Scholar
Bacteraemia with Campylobacter jejuni: no association with the virulence genes iam, cdtB, capA or virB
Henrik Nielsen, S. Persson, K. E. Olsen, Tove Ejlertsen +2 more
2010European Journal of Clinical Microbiology and Infectious Diseases14 citations
Semantic Scholar
Real-time TaqMan polymerase chain reaction-based genus-identification and pyrosequencing-based species identification of Campylobacter jejuni, C. coli, C. lari, C. upsaliensis, and C. fetus directly on stool samples.
S. Persson, Henrik M Petersen, C. Jespersgaard, K. E. Olsen
2012Diagnostic microbiology and infectious disease5 citations
Semantic Scholar
TITLE: Multiplex PCR method for detection of Clostridium difficile tcdA,
S. Persson, J. N. Jensen, K. E. Olsen
20113 citations
Semantic Scholar
False-positive extended-spectrum β-lactamase tests for Klebsiella oxytoca strains hyperproducing K 1 β-lactamase
A. Hammerum, Camilla H. Lester, J. Neimann, L. J. Porsbo +7 more
20042 citations
Semantic Scholar
CLOSTRIDIUM DIFFICILE - A POTENTIALLY FOODBORNE ZOONOSE? SIGNIFICANCE IN HUMANS, ANIMALS AND FOOD
F. Hansen, K. E. Olsen
20091 citations
Semantic Scholar
Serovar distribution and molecular characterization of Salmonella enterica from humans and poultry in Bangladesh
H. Barua, P. Biswas, K. Talukder, K. E. Olsen +1 more
20130 citations
Semantic Scholar
Diversity of Clostridium difficile isolated from patients consulting general pratice
L. Søes, H. M. Holt, K. E. Olsen, E. Nielsen +1 more
20130 citations
Semantic Scholar
Narrrow-spectrum penicillins and exposure to beef as risk factors for Clostridium difficile infection in community. A case-control study among patients attending general practice in Denmark
L. Søes, H. M. Holt, S. Ethelberg, K. Mølbak +5 more
20120 citations
Semantic Scholar
[First Danish case of Clostridium difficile ribotype 027].
L. Søes, I. Brock, M. Torpdahl, S. Persson +3 more
2009Ugeskrift for læger0 citations
Semantic Scholar
P762 Clinical features of Clostridium difficile-associated disease and molecular characterisation of the isolated strains in a cohort of Danish hospitalised patients
L. Søes, I. Brock, S. Persson, K. E. Olsen +1 more
20070 citations
Semantic Scholar
Prevalence of sulphonamide resistant genes in Escherichia coli isolates obtained from broiler faeces, broiler meat, healthy humans and urinary infections in Denmark
M. Trobos, L. Jakobsen, K. Pedersen, Y. Agersø +5 more
20070 citations
Semantic Scholar

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