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Items: 14


Performance of the EUCAST disc diffusion method and two MIC methods in detection of Enterobacteriaceae with reduced susceptibility to meropenem: the NordicAST CPE study.

Haldorsen B, Giske CG, Hansen DS, Helgason KO, Kahlmeter G, Löhr IH, Matuschek E, Österblad M, Rantakokko-Jalava K, Wang M, Småbrekke L, Samuelsen Ø, Sundsfjord A; NordicAST CPE Study Group .

J Antimicrob Chemother. 2018 Oct 1;73(10):2738-2747. doi: 10.1093/jac/dky276. Erratum in: J Antimicrob Chemother. 2018 Oct 1;73(10):2905.


An Estimate of the Burden of Fungal Disease in Norway.

Nordøy I, Hesstvedt L, Torp Andersen C, Mylvaganam H, Kols NI, Falch BM, Tofteland S, Müller F, Denning DW.

J Fungi (Basel). 2018 Feb 21;4(1). pii: E29. doi: 10.3390/jof4010029.


Bifidobacterium Bacteremia: Clinical Characteristics and a Genomic Approach To Assess Pathogenicity.

Esaiassen E, Hjerde E, Cavanagh JP, Simonsen GS, Klingenberg C; Norwegian Study Group on Invasive Bifidobacterial Infections.

J Clin Microbiol. 2017 Jul;55(7):2234-2248. doi: 10.1128/JCM.00150-17. Epub 2017 May 10.


Performance of the EUCAST disk diffusion method, the CLSI agar screen method, and the Vitek 2 automated antimicrobial susceptibility testing system for detection of clinical isolates of Enterococci with low- and medium-level VanB-type vancomycin resistance: a multicenter study.

Hegstad K, Giske CG, Haldorsen B, Matuschek E, Schønning K, Leegaard TM, Kahlmeter G, Sundsfjord A; NordicAST VRE Detection Study Group.

J Clin Microbiol. 2014 May;52(5):1582-9. doi: 10.1128/JCM.03544-13. Epub 2014 Mar 5.


Large IncHI2-plasmids encode extended-spectrum β-lactamases (ESBLs) in Enterobacter spp. bloodstream isolates, and support ESBL-transfer to Escherichia coli.

Nilsen E, Haldorsen BC, Sundsfjord A, Simonsen GS, Ingebretsen A, Naseer U, Samuelsen O; Norwegian Study Group on Invasive Enterobacter.

Clin Microbiol Infect. 2013 Nov;19(11):E516-8. doi: 10.1111/1469-0691.12274. Epub 2013 Jun 25.


A long-term low-frequency hospital outbreak of KPC-producing Klebsiella pneumoniae involving Intergenus plasmid diffusion and a persisting environmental reservoir.

Tofteland S, Naseer U, Lislevand JH, Sundsfjord A, Samuelsen O.

PLoS One. 2013;8(3):e59015. doi: 10.1371/journal.pone.0059015. Epub 2013 Mar 11.


A nationwide study of mechanisms conferring reduced susceptibility to extended-spectrum cephalosporins in clinical Escherichia coli and Klebsiella spp. isolates.

Tofteland S, Dahl KH, Aasnæs B, Sundsfjord A, Naseer U.

Scand J Infect Dis. 2012 Dec;44(12):927-33. doi: 10.3109/00365548.2012.707330. Epub 2012 Sep 19.


[Young girl with abscesses in the face].

Waagsbø B, Tofteland S, Kittang OB.

Tidsskr Nor Laegeforen. 2011 Nov 15;131(22):2246-8. doi: 10.4045/tidsskr.09.1237. Norwegian.


Species identification and molecular characterization of Acinetobacter spp. blood culture isolates from Norway.

Karah N, Haldorsen B, Hegstad K, Simonsen GS, Sundsfjord A, Samuelsen Ø; Norwegian Study Group of Acinetobacter.

J Antimicrob Chemother. 2011 Apr;66(4):738-44. doi: 10.1093/jac/dkq521. Epub 2011 Jan 19.


Emergence of OXA-carbapenemase- and 16S rRNA methylase-producing international clones of Acinetobacter baumannii in Norway.

Karah N, Haldorsen B, Hermansen NO, Tveten Y, Ragnhildstveit E, Skutlaberg DH, Tofteland S, Sundsfjord A, Samuelsen Ø.

J Med Microbiol. 2011 Apr;60(Pt 4):515-21. doi: 10.1099/jmm.0.028340-0. Epub 2010 Dec 16.


Plasmid-mediated quinolone resistance determinants qnr and aac(6')-Ib-cr in Escherichia coli and Klebsiella spp. from Norway and Sweden.

Karah N, Poirel L, Bengtsson S, Sundqvist M, Kahlmeter G, Nordmann P, Sundsfjord A, Samuelsen Ø; Norwegian Study Group on PMQR.

Diagn Microbiol Infect Dis. 2010 Apr;66(4):425-31. doi: 10.1016/j.diagmicrobio.2009.12.004.


Molecular characterization of CTX-M-15-producing clinical isolates of Escherichia coli reveals the spread of multidrug-resistant ST131 (O25:H4) and ST964 (O102:H6) strains in Norway.

Naseer U, Haldorsen B, Tofteland S, Hegstad K, Scheutz F, Simonsen GS, Sundsfjord A; Norwegian ESBL Study Group.

APMIS. 2009 Jul;117(7):526-36. doi: 10.1111/j.1600-0463.2009.02465.x.


Emergence of clonally related Klebsiella pneumoniae isolates of sequence type 258 producing plasmid-mediated KPC carbapenemase in Norway and Sweden.

Samuelsen Ø, Naseer U, Tofteland S, Skutlaberg DH, Onken A, Hjetland R, Sundsfjord A, Giske CG.

J Antimicrob Chemother. 2009 Apr;63(4):654-8. doi: 10.1093/jac/dkp018. Epub 2009 Feb 13.


Effects of phenotype and genotype on methods for detection of extended-spectrum-beta-lactamase-producing clinical isolates of Escherichia coli and Klebsiella pneumoniae in Norway.

Tofteland S, Haldorsen B, Dahl KH, Simonsen GS, Steinbakk M, Walsh TR, Sundsfjord A; Norwegian ESBL Study Group.

J Clin Microbiol. 2007 Jan;45(1):199-205. Epub 2006 Nov 1.

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