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Title: Changes in fluoroquinolone-resistant Streptococcus pneumoniae after 7-valent conjugate vaccination, Spain
Author: Campa, Adela G. de la
Ardanuy Tisaire, María Carmen
Balsalobre, Luz
Pérez Trallero, Emilio
Marimón, José María
Fenoll, Asunción
Liñares Louzao, Josefina
Keywords: Estreptococs
Infeccions per pneumococs
Vacuna antipneumocòccica
Resistència als medicaments
Streptococcus pneumonia
Pneumococcal Infections
Pneumococcal vaccine
Drug resistance
Issue Date: Jun-2009
Publisher: Centers for Disease Control and Prevention
Abstract: Among 4,215 Streptococcus pneumoniae isolates obtained in Spain during 2006, 98 (2.3%) were ciprofloxacin resistant (3.6% from adults and 0.14% from children). In comparison with findings from a 2002 study, global resistance remained stable. Low-level resistance (30 isolates with MIC 4-8 μg/mL) was caused by a reserpine-sensitive efflux phenotype (n = 4) or single topoisomerase IV (parC [n = 24] or parE [n = 1]) changes. One isolate did not show reserpine-sensitive efflux or mutations. High-level resistance (68 isolates with MIC ≥16 μg/mL) was caused by changes in gyrase (gyrA) and parC or parE. New changes in parC (S80P) and gyrA (S81V, E85G) were shown to be involved in resistance by genetic transformation. Although 49 genotypes were observed, clones Spain9V-ST156 and Sweden15A-ST63 accounted for 34.7% of drug-resistant isolates. In comparison with findings from the 2002 study, clones Spain14-ST17, Spain23F-ST81, and ST8819F decreased and 4 new genotypes (ST9710A, ST57016, ST43322, and ST71733) appeared in 2006.
Note: Reproducció del document publicat a:
It is part of: Emerging Infectious Diseases, 2009, vol. 15, num. 6, p. 905-911
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ISSN: 1080-6040
Appears in Collections:Articles publicats en revistes (Patologia i Terapèutica Experimental)
Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

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