title: [Epidemiological study of Klebsiella spp. uropathogenic strains producing extended-spectrum β-lactamase in a Tunisian university hospital, 2009].
abstract: OBJECTIVE
  An update on the prevalence of antibiotic resistance in extended-spectrum β-lactamase among urinary strains of Klebsiella spp. isolated from in-come and out-come patients at University Hospital, Mahdia (Tunisia).
  
  
  METHODS
  A retrospective survey was made over a period of twelve months (year 2009). It focused on 3564 patients with urinary tract infection confirmed by the Laboratory of Microbiology in the University Hospital, Mahdia.
  
  
  RESULTS
  Klebsiella spp. was involved in 5.5% (198/3564) of all cases of urinary tract infections identified. Klebsiella pneumoniae accounted for 94.9% of all Klebsiella (5.1% for Klebsiella oxytoca). The frequency of Klebsiella spp. resistance to fluoroquinolones was 19.2% and to third generation cephalosporins was 22.7%. Forty strains of Klebsiella spp. producing extended-spectrum β-lactamase witch corresponds to 20.2% of all the Klebsiella. The extended-spectrum β-lactamase strains with resistance to fluoroquinolones were 67.5% (27/40) or 13.6% of all klebsiella (27/198). No strain was resistant to imipenem. The 27 strains multiresistant (ESBL+FQ resistance) are likely to be carriers of plasmids encoding the ESBL and resistance to fluoroquinolones.
  
  
  CONCLUSIONS
  the resistance of Enterobacteriaceae, including Klebsiella spp, to fluoroquinolones has become a concern both in hospital in community medicine. The advent of this resistance mechanism involves a more rational use of fluoroquinolones, especially as first-line treatment of urinary tract infections.
authors.affiliation: Laboratoire de microbiologie, hôpital Tahar Sfar de Mahdia, Mahdia 5100, Tunisie. aniswalid_tn2003@yahoo.fr
authors.forename: A
authors.initials: A
authors.lastname: Ben Haj Khalifa
authors.forename: M
authors.initials: M
authors.lastname: Khedher
mesh_terms: D003428:Cross Infection / Q000453:epidemiology / Q000382:microbiology; D005260:Female; D006757:Hospital Units / Q000706:statistics & numerical data; D006785:Hospitals, University; D006801:Humans; D007709:Klebsiella / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism; D007710:Klebsiella Infections / Q000453:epidemiology* / Q000382:microbiology; D041121:Klebsiella oxytoca / Q000302:isolation & purification / Q000502:physiology; D007711:Klebsiella pneumoniae / Q000302:isolation & purification / Q000502:physiology; D008297:Male; D008826:Microbial Sensitivity Tests; D012189:Retrospective Studies; D014416:Tunisia / Q000453:epidemiology; D014552:Urinary Tract Infections / Q000453:epidemiology* / Q000382:microbiology; D001618:beta-Lactamases / Q000378:metabolism*
chemical_list: D001618:beta-Lactamases