Fluoroquinolone Resistance in Penicillin-resistant Streptococcus pneumoniae Clones, Spain

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  de la Campa, Adela G. ; Balsalobre, Luz ; Ardanuy, Carmen ; Fenoll, Asunción ; Pérez-Trallero, Emilio ; Liñares, Josefina
• Corporate Authors:
  Spanish Pneumococcal Infection Study Network G03/103
• Description:
  Among 2,882 Streptococcus pneumoniae sent to the Spanish Reference Laboratory during 2002, 75 (2.6%) were ciprofloxacin-resistant. Resistance was associated with older patients (3.9% in adults and 7.2% in patients > or =65 years of age), with isolation from noninvasive sites (4.3% vs. 1.0%), and with penicillin and macrolide resistance. Among 14 low-level resistant (MIC 4-8 microg/mL) strains, 1 had a fluoroquinolone efflux phenotype, and 13 showed single ParC changes. The 61 high-level ciprofloxacin-resistant (MIC > or =16 microg/mL) strains showed either two or three changes at ParC, ParE, and GyrA. Resistance was acquired either by point mutation (70 strains) or by recombination with viridans streptococci (4 strains) at the topoisomerase II genes. Although 36 pulsed-field gel electrophoresis patterns were observed, 5 international multiresistant clones (Spain23F-1, Spain6B-2, Spain9V-3, Spain14-5 and Sweden15A-25) accounted for 35 (46.7%) of the ciprofloxacin-resistant strains. Continuous surveillance is needed to prevent the dissemination of these clones.
• Subjects:
  Adult Base Sequence Child DNA, Bacterial DNA Gyrase DNA Topoisomerase Iv Drug Resistance, Multiple, Bacterial Fluoroquinolones Humans Microbial Sensitivity Tests Molecular Epidemiology Penicillin Resistance Streptococcal Infections Streptococcus Pneumoniae

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• Source:
  Emerg Infect Dis. 10(10):1751-1759.
• Document Type:
  Journal Article
• Place as Subject:
  Spain
• Volume:
  10
• Issue:
  10
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:62bd8960e6586981929dc0078677d431d947a2bd7b6a26df79e30e5d8c709fa8
• Download URL:
  https://stacks.cdc.gov/view/cdc/14658/cdc_14658_DS1.pdf
• File Type:
  [PDF - 203.05 KB ]