Blar i forfatter Det helsevitenskapelige fakultet "Kacelnik, Oliver"

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    • The fight to keep resistance at bay, epidemiology of carbapenemase producing organisms (CPOs), vancomycin resistant enterococci (VRE) and methicillin resistant Staphylococcus aureus (MRSA) in Norway, 2006-2017 

      Elstrøm, Petter; Astrup, Elisabeth; Hegstad, Kristin; Samuelsen, Ørjan; Enger, Hege; Kacelnik, Oliver (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-04)
      <p><i>Introduction - </i>Scandinavian countries have traditionally had a low prevalence of resistant organisms, but have in recent years experienced a change in their epidemiology. We aim to describe the epidemiology of carbapenemase-producing organisms (CPOs), vancomycin-resistant enterococci (VRE) and methicillin-resistant <i>S. aureus</i> (MRSA) in Norway, measure the importance of infections ...

    • Intraregional hospital outbreak of OXA-244-producing Escherichia coli ST38 in Norway, 2020 

      Lindemann, Paul Christoffer; Pedersen, Torunn Annie; Oma, Dorthea Hagen; Janice, Jessin; Grøvan, Fredrik; Chedid, Ghantous Milad; Hafne, Liv Jorunn; Josefsen, Ellen Haldis; Kacelnik, Oliver; Sundsfjord, Arnfinn; Samuelsen, Ørjan (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-06)
      Infections with OXA-244-carbapenemase-producing Escherichia coli with sequence type (ST)38 have recently increased in Europe. Due to its low-level activity against carbapenems, OXA-244 can be difficult to detect. Previous assessments have not revealed a clear source and route of transmission for OXA-244-producing E. coli, but there are indications of non-healthcare related sources and community ...

    • Nasjonalt utbrudd av Pseudomonas aeruginosa i sykehus forårsaket av ferdigfuktede ikke-sterile vaskekluter, Norge, 2021-2022 

      Gravningen, Kirsten Midttun; Ødeskaug, Liz Ertzeid; Utheim, Mari Nythun; Korpås, Julie Andrine; Jørgensen, Silje Bakken; Elstrøm, Petter; Lyrån, Birgitte; Jemtland, Rune; Kols, Nicola Isabelle; Kvaal, Siv Anita; Asfeldt, anne mette; Littauer, Pia; Kilhus, Kristin; Skutlaberg, Dag Harald; Pedersen, Torunn Annie; Hermansen, Nils Olav; Kacelnik, Oliver; Iversen, Bjørn Gunnar (Research report; Forskningsrapport, 2022-06)
      I november 2021 ble Folkehelseinstituttet varslet om at tre intensivpasienter hadde dødd av blodbaneinfeksjon med bakterien Pseudomonas aeruginosa ved Universitetssykehuset Nord-Norge i Tromsø i løpet av kort tid. De hadde identiske isolater forenlig med et klonalt utbrudd. Helgenomsekvensering viste at det var en ny sekvenstype, ST3875, som ikke har vært påvist i Norge eller andre land. Nye ...

    • Nationwide, population-based observational study of the molecular epidemiology and temporal trend of carbapenemase-producing Enterobacterales in Norway, 2015 to 2021 

      Ljungquist, Oskar; Haldorsen, Bjørg; Pöntinen, Anna Kaarina; Janice, Jessin; Josefsen, Ellen Haldis; Elstrøm, Petter; Kacelnik, Oliver; Sundsfjord, Arnfinn; Samuelsen, Ørjan; Handal, Nina; Ranheim, Trond Egil; Hansen, Bent-Are; Mjøen, Andreas Fossum; Lindemann, Paul Christoffer; Nilsen, Einar; Zaragkoulias, Kyriakos; Larsen, Hege Elisabeth; Bjørnholt, Jørgen; Gammelsrud, Karianne Wiger; Jakovljev, Aleksandra; Löhr, Iren Høyland; Bredberg, Anders; Marvik, Åshild; Minge, Christina; Tofteland, Ståle; Papp, Kristina; Onken, Annette; Weme, Einar Tollaksen; Guennigsman, Brian Albert (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-06)
      National and regional carbapenemaseproducing Enterobacterales (CPE) surveillance is essential to understand the burden of antimicrobial resistance, elucidate outbreaks, and develop infection-control or antimicrobial-treatment recommendations. Aim: This study aimed to describe CPE and their epidemiology in Norway from 2015 to 2021. Methods: A nationwide, population-based observational study of ...

    • The population structure of vancomycin-resistant and -susceptible Enterococcus faecium in a low-prevalence antimicrobial resistance setting is highly influenced by circulating global hospital-associated clones 

      al Rubaye, Mushtaq Talib Shawi; Janice, Jessin; Bjørnholt, Jørgen; Kacelnik, Oliver; Haldorsen, Bjørg C; Nygaard, Randi Monsen; Hegstad, Joachim; Sundsfjord, Arnfinn Ståle; Hegstad, Kristin (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-19)
      Between 2010 and 2015 the incidence of vancomycin-resistant Enterococcus faecium (VREfm) in Norway increased dramatically. Hence, we selected (1) a random subset of vancomycin-resistant enterococci (VRE) from the Norwegian Surveillance System for Communicable Diseases (2010–15; n=239) and (2) Norwegian vancomycin-susceptible E. faecium (VSEfm) bacteraemia isolates from the national surveillance ...