Tor Monsen

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Affiliated as physician at Department of Clinical Microbiology Section: Clinical Bacteriology

Klinisk bakterieologi, Universitetssjukhuset Umeå universitet, 901 85 Umeå

Completed genome and emergence scenario of the multidrug-resistant nosocomial pathogen Staphylococcus epidermidis ST215

BMC Microbiology, BioMed Central (BMC) 2024, Vol. 24, (1)

Kellgren, Therese; Dwibedi, Chinmay Kumar; Widerström, Micael; et al.

Genotypic characterization of Staphylococcus chromogenes and Staphylococcus simulans from Swedish cases of bovine subclinical mastitis

Journal of Dairy Science, Elsevier 2023, Vol. 106, (11) : 7991-8004

Persson Waller, K.; Myrenås, M.; Börjesson, S.; et al.

At-home sampling to meet geographical challenges for serological assessment of SARS-CoV-2 exposure in a rural region of northern Sweden, March to May 2021: a retrospective cohort study

Eurosurveillance, European Centre for Disease Control and Prevention (ECDC) 2023, Vol. 28, (13)

Wigren, Julia; Vikström, Linnea; Rosendal, Ebba; et al.

Enhanced Antibiotic Tolerance of an In Vitro Multispecies Uropathogen Biofilm Model, Useful for Studies of Catheter-Associated Urinary Tract Infections

Microorganisms, MDPI 2022, Vol. 10, (6)

Hou, Jiapeng; Wang, Lutian; Alm, Martin; et al.

Reducing antibiotic use in uncomplicated urinary tract infections in adult women: a systematic review and individual participant data meta-analysis

Clinical Microbiology and Infection, Elsevier 2022, Vol. 28, (12) : 1558-1566

Kaußner, Yvonne; Röver, Christian; Heinz, Judith; et al.

Augmented enterocyte damage during Candida albicans and Proteus mirabilis coinfection

Frontiers in Cellular and Infection Microbiology, Frontiers Media S.A. 2022, Vol. 12

Niemiec, Maria Joanna; Kapitan, Mario; Himmel, Maximilian; et al.

Heterogeneity of Staphylococcus epidermidis in prosthetic joint infections: time to reevaluate microbiological criteria?

European Journal of Clinical Microbiology and Infectious Diseases, Springer 2022, Vol. 41 : 87-97

Widerström, Micael; Stegger, Marc; Johansson, Anders; et al.

Detection of SARS-CoV-2 antibodies in serum and dried blood spot samples of vaccinated individuals using a sensitive homogeneous proximity extension assay

New Biotechnology, Elsevier 2022, Vol. 72 : 139-148

Zhao, Hongxing; Wang, Mengqi; Muthelo, Phathutshedzo; et al.

Evaluation of 11 SARS-CoV-2 antibody tests by using samples from patients with defined IgG antibody titers

Scientific Reports, Nature Publishing Group 2021, Vol. 11, (1)

Lagerqvist, Nina; Maleki, Kimia T.; Verner-Carlsson, Jenny; et al.

Escherichia coli causing recurrent urinary tract infections: Comparison to non-recurrent isolates and genomic adaptation in recurrent infections

Microorganisms, MDPI 2021, Vol. 9, (7)

Nielsen, Karen Leth; Stegger, Marc; Kiil, Kristoffer; et al.

Strategies to reduce antibiotic use in women with uncomplicated urinary tract infection in primary care: protocol of a systematic review and meta-analysis including individual patient data

BMJ Open, BMJ Publishing Group Ltd 2020, Vol. 10, (10)

Heinz, Judith; Rover, Christian; Furaijat, Ghefar; et al.

A new concept and a comprehensive evaluation of SYSMEX UF-1000i flow cytometer to identify culture-negative urine specimens in patients with UTI

European Journal of Clinical Microbiology and Infectious Diseases, Springer 2017, Vol. 36, (9) : 1691-1703

Monsen, Tor; Ryden, Patrik

Significant spread of extensively drug-resistant Acinetobacter baumannii genotypes of clonal complex 92 among intensive care unit patients in a university hospital in southern Iran

Journal of Medical Microbiology, MICROBIOLOGY SOC 2017, Vol. 66, (11) : 1656-1662

Saffari, Fereshteh; Monsen, Tor; Karmostaji, Afsaneh; et al.

Ny modell för diagnostik av urinvägsinfektion föreslås

Läkartidningen, Vol. 113, (46)

Ferry, Sven A.; Monsen, Tor J.

Bacterial flora and the epidemiology of staphylococcus aureus in the nose among patients with symptomatic nasal septal perforations

Acta Oto-Laryngologica, Vol. 136, (6) : 620-625

Hulterström, Anna Karin; Sellin, Mats; Monsen, Tor; et al.

Molecular and Phenotypic Characterization of Multidrug-Resistant Clones of Staphylococcus epidermidis in Iranian Hospitals: Clonal Relatedness to Healthcare-Associated Methicillin-Resistant Isolates in Northern Europe

Microbial Drug Resistance, Vol. 22, (7) : 570-577

Saffari, Fereshteh; Widerström, Micael; Gurram, Bharat Kumar; et al.

Colonization of patients, healthcare workers, and the environment with healthcare-associated Staphylococcus epidermidis genotypes in an intensive care unit: a prospective observational cohort study

BMC Infectious Diseases, Vol. 16

Widerström, Micael; Wiström, Johan; Edebro, Helén; et al.

High Diagnostic Accuracy of Nitrite Test Paired with Urine Sediment can Reduce Unnecessary Antibiotic Therapy

The Open Microbiology Journal, Vol. 9 : 150-159

Ferry, Sven A.; Holm, Stig E.; Ferry, B. Magnus; et al.

Flow Cytometry Analysis Using Sysmex UF-1000i Classifies Uropathogens Based on Bacterial, Leukocyte, and Erythrocyte Counts in Urine Specimens among Patients with Urinary Tract Infections

Journal of Clinical Microbiology, Vol. 53, (2) : 539-545

Monsen, Tor; Ryden, Patrik

Mecillinam resistance and outcome of pivmecillinam treatment in uncomplicated lower urinary tract infection in women

Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS), Hoboken: Wiley-Blackwell 2014, Vol. 122, (4) : 317-323

Monsen, Tor J.; Holm, Stig E.; Ferry, Björn Magnus; et al.

Coagulase-negative staphylococci: update on the molecular epidemiology and clinical presentation, with a focus on Staphylococcus epidermidis and Staphylococcus saprophyticus

European Journal of Clinical Microbiology and Infectious Diseases, New York: Springer-Verlag New York 2012, Vol. 31, (1) : 7-20

Widerstrom, Micael; Wistrom, Johan; Sjöstedt, Anders; et al.

A Multidrug-Resistant Staphylococcus epidermidis Clone (ST2) Is an Ongoing Cause of Hospital-Acquired Infection in a Western Australian Hospital

Journal of Clinical Microbiology, Vol. 50, (6) : 2147-2151

Widerström, Micael; McCullough, Cheryll A.; Coombs, Geoffrey W.; et al.

Near absence of methicillin-resistance and pronounced genetic diversity among Staphylococcus epidermidis isolated from healthy persons in northern Sweden

Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS), Wiley-Blackwell 2011, Vol. 119, (8) : 505-512

Widerström, Micael; Wiström, Johan; Ek, Elin; et al.

In vitro effect of ultrasound on bacteria and suggested protocol for sonication and diagnosis of prosthetic infections

Journal of Clinical Microbiology, Vol. 47, (8) : 2496-2501

Monsen, Tor; Lövgren, Elisabeth; Widerström, Micael; et al.

Clonality among multidrug-resistant hospital-associated Staphylococcus epidermidis in northern Europe

Scandinavian Journal of Infectious Diseases, Vol. 41, (9) : 642-649

Widerström, Micael; Monsen, Tor; Karlsson, Carina; et al.

Molecular epidemiology of Staphylococcus saprophyticus isolated from women with uncomplicated community-acquired urinary tract infection

Journal of Clinical Microbiology, Vol. 45, (5) : 1561-1564

Widerström, Micael; Wiström, Johan; Ferry, Sven; et al.

Multiple-locus variable-number tandem repeat analysis for typing of Staphylococcus epidermidis.

Journal of Clinical Microbiology, Vol. 44, (1) : 260-5

Johansson, Anders; Koskiniemi, Satu; Gottfridsson, Per; et al.

Molecular epidemiology of meticillin-resistant coagulase-negative staphylococci in a Swedish county hospital: evidence of intra- and interhospital clonal spread

Journal of Hospital Infection, Vol. 64, (2) : 177-183

Widerström, Micael; Monsen, Tor; Karlsson, Carina; et al.

Spread of clones of multidrug-resistant, coagulase-negative staphylococci within a university hospital.

Infection Control and Hospital Epidemiology, Vol. 26, (1) : 76-80

Monsen, Tor; Karlsson, Carina; Wiström, Johan

Brain abscess caused by methicillin-resistant Staphylococcus aureus

Scandinavian Journal of Infectious Diseases, Vol. 32, (5) : 562-563

Ahlm, Clas; Olsen, Björn; Koskinen, Lars Ove; et al.

The emergence of an antimicrobial resistant Staphylococcus epidermidis clone in Northern Europe

Kellgren, Therese; Dwibedi, Chinmay Kumar; Widerström, Micael; et al.

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Research groups

Group member

Micael Widerström