Fecal colonization of VIM-1―producing Klebsiella pneumoniae and in vivo transfer of multidrug-resistant IncN plasmid in a renal transplant patentNASEER, Umaer; ODVAR ERIKSEN, Bjørn; SUNDSFJORD, Arnfinn et al.Diagnostic microbiology and infectious disease. 2012, Vol 72, Num 4, pp 363-366, issn 0732-8893, 4 p.Article

Sequence types and plasmid carriage of uropathogenic Escherichia coli devoid of phenotypically detectable resistanceBENGTSSON, Stina; NASEER, Umaer; SUNDSFJORD, Arnfinn et al.Journal of antimicrobial chemotherapy (Print). 2012, Vol 67, Num 1, pp 69-73, issn 0305-7453, 5 p.Article

Clustering of polyclonal VanB-type vancomycin-resistant Enterococcus faecium in a low-endemic area was associated with CC17-genogroup strains harbouring transferable vanB2-Tn5382 and pRUM-like repA containing plasmids with axe-txe plasmid addiction systemsBJØRKENG, Eva; RASMUSSEN, Gunlog; SUNDSFJORD, Arnfinn et al.APMIS. Acta pathologica, microbiologica et immunologica Scandinavica. 2011, Vol 119, Num 4-5, pp 247-258, issn 0903-4641, 12 p.Article

mef(A), mef(E) and a new mef allele in macrolide-resistant Streptococcus spp. isolates from NorwaySANGVIK, Maria; LITTAUER, Pia; SIMONSEN, Gunnar Skov et al.Journal of antimicrobial chemotherapy (Print). 2005, Vol 56, Num 5, pp 841-846, issn 0305-7453, 6 p.Article

Phenotypic and genotypic aminoglycoside resistance in blood culture isolates of coagulase-negative staphylococci from a single neonatal intensive care unit, 1989-2000KLINGENBERG, Claus; SUNDSFJORD, Arnfinn; RØNNESTAD, Arild et al.Journal of antimicrobial chemotherapy (Print). 2004, Vol 54, Num 5, pp 889-896, issn 0305-7453, 8 p.Article

Evaluation of phenotypic tests for the detection of metallo-β-lactamase-producing Pseudomonas aeruginosa in a low prevalence countrySAMUELSEN, Ørjan; BUARØ, Liselotte; GISKE, Christian G et al.Journal of antimicrobial chemotherapy (Print). 2008, Vol 61, Num 4, pp 827-830, issn 0305-7453, 4 p.Article

First outbreak of extended-spectrum β-lactamase-producing Klebsiella pneumoniae in a Norwegian neonatal intensive care unit; associated with contaminated breast milk and resolved by strict cohortingRETTEDAL, Siren; LÖHR, Iren H; NATAS, Olav et al.APMIS. Acta pathologica, microbiologica et immunologica Scandinavica. 2012, Vol 120, Num 8, pp 612-621, issn 0903-4641, 10 p.Article

Identification of NDM-1-producing Enterobacteriaceae in NorwaySAMUELSEN, Ørian; THILESEN, Carina M; HEGGELUND, Lars et al.Journal of antimicrobial chemotherapy (Print). 2011, Vol 66, Num 3, pp 670-672, issn 0305-7453, 3 p.Article

Nonconjugative transposition of the vanB-containing Tn5382-like element in Enterococcus faeciumDAHL, Kristin H; RØKENES, Torunn P; LUNDBLAD, Eirik W et al.Antimicrobial agents and chemotherapy. 2003, Vol 47, Num 2, pp 786-789, issn 0066-4804, 4 p.Article

Effects of phenotype and genotype on methods for detection of extended-spectrum-β-lactamase-producing clinical isolates of Escherichia coli and Klebsiella pneumoniae in NorwayTOFTELAND, Stale; HALDORSEN, Bjørg; DAHL, Kristin H et al.Journal of clinical microbiology (Print). 2007, Vol 45, Num 1, pp 199-205, issn 0095-1137, 7 p.Article

Emergence of OXA-carbapenemase- and 16S rRNA methylase-producing international clones of Acinetobacter baumannii in NorwayKARAH, Nabil; HALDORSEN, Bjørg; HERMANSEN, Nils O et al.Journal of medical microbiology. 2011, Vol 60, Num 4, pp 515-521, issn 0022-2615, 7 p.Article

Redefining extended-spectrum p-lactamases : balancing science and clinical needGISKE, Christian G; SUNDSFJORD, Arnfinn S; KAHLMETER, Gunnar et al.Journal of antimicrobial chemotherapy (Print). 2009, Vol 63, Num 1, pp 1-4, issn 0305-7453, 4 p.Article

Species identification and molecular characterization of Acinetobacter spp. blood culture isolates from NorwayKARAH, Nabil; HALDORSEN, Bjørg; HEGSTAD, Kristin et al.Journal of antimicrobial chemotherapy (Print). 2011, Vol 66, Num 4, pp 738-744, issn 0305-7453, 7 p.Article

Evaluation of Rosco Neo-Sensitabs for phenotypic detection and subgrouping of ESBL-, AmpC- and carbapenemase-producing EnterobacteriaceaeHANSEN, Frank; HAMMERUM, Anette M; SKOV, Robert L et al.APMIS. Acta pathologica, microbiologica et immunologica Scandinavica. 2012, Vol 120, Num 9, pp 724-732, issn 0903-4641, 9 p.Article

Transfer of plasmid and chromosomal glycopeptide resistance determinants occurs more readily in the digestive tract of mice than in vitro and exconjugants can persist stably in vivo in the absence of glycopeptide selectionDAHL, Kristin Hegstad; MATER, Denis D. G; FLORES, Maria José et al.Journal of antimicrobial chemotherapy (Print). 2007, Vol 59, Num 3, pp 478-486, issn 0305-7453, 9 p.Article

Dissemination of a Carbapenem-Resistant Acinetobacter baumannii Strain Belonging to International Clone II/Sequence Type 2 and Harboring a Novel AbaR4-Like Resistance Island in LatviaSAULE, Mara; SAMUELSEN, Ørjan; DUMPIS, Uga et al.Antimicrobial agents and chemotherapy. 2013, Vol 57, Num 2, pp 1069-1072, issn 0066-4804, 4 p.Article

Urinary tract isolates of Enterobacteriaceae from hospitalized patients in the Arkhangelsk region, Russia: Antimicrobial susceptibility and characterization of extended-spectrum beta-lactamases strainsVOROBIEVA, Veronika; NASEER, Umaer; BAZHUKOVA, Tatiana et al.Scandinavian journal of infectious diseases. 2010, Vol 42, Num 10, pp 797-800, issn 0036-5548, 4 p.Article

Emergence of clonally related Klebsiella pneumoniae isolates of sequence type 258 producing plasmid-mediated KPC carbapenemase in Norway and SwedenSAMUELSEN, Orjan; NASEER, Umaer; TOFTELAND, Stale et al.Journal of antimicrobial chemotherapy (Print). 2009, Vol 63, Num 4, pp 654-658, issn 0305-7453, 5 p.Article

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 NorwayNASEER, Umaer; HALDORSEN, BjØrg; TOFTELAND, Stale et al.APMIS. Acta pathologica, microbiologica et immunologica Scandinavica. 2009, Vol 117, Num 7, pp 526-536, issn 0903-4641, 11 p.Article

ccrAB_Ent serine recombinase genes are widely distributed in the Enterococcus faecium and Enterococcus casseliflavus species groups and are expressed in E. faeciumBJØRKENG, Eva Katrin; TESSEMA, Girum Tadesse; LUNDBLAD, Eirik Wasmuth et al.Microbiology (Reading). 2010, Vol 156, pp 3624-3634, issn 1350-0872, 11 p., 12Article

Factors affecting the reversal of antimicrobial-drug resistanceJOHNSEN, Pal J; TOWNSEND, Jeffrey P; BØHN, Thomas et al.Lancet. Infectious diseases (print). 2009, Vol 9, Num 6, pp 357-364, issn 1473-3099, 8 p.Article

Nosocomial outbreak of CTX-M-15-producing E. coli in NorwayNASEER, Umaer; NATAS, Olav B; HALDORSEN, Bjørg C et al.APMIS. Acta pathologica, microbiologica et immunologica Scandinavica. 2007, Vol 115, Num 2, pp 120-126, issn 0903-4641, 7 p.Article

Occurrence, Population Structure, and Antimicrobial Resistance of Enterococci in Marginal and Apical PeriodontitisJINGLU SUN; XIAOBO SONG; KRISTIANSEN, Bjørn Erik et al.Journal of clinical microbiology (Print). 2009, Vol 47, Num 7, pp 2218-2225, issn 0095-1137, 8 p.Article

Increased high-level gentamicin resistance in invasive Enterococcus faecium is associated with aac(6')le-aph(2)la-encoding transferable megaplasmids hosted by major hospital-adapted lineagesROSVOLL, Torill C. S; LINDSTAD, Belinda L; LUNDE, Tracy M et al.FEMS immunology and medical microbiology (Print). 2012, Vol 66, Num 2, pp 166-176, issn 0928-8244, 11 p.Article

Host range of enterococcal vanA plasmids among Gram-positive intestinal bacteriaWERNER, Guido; FREITAS, Ana R; WILLEMS, R. J et al.Journal of antimicrobial chemotherapy (Print). 2011, Vol 66, Num 2, pp 273-282, issn 0305-7453, 10 p.Article