Abstract:
INTRODUCTION:To investigate the susceptibility of group B streptococci (GBS) to macrolides and lincosamides and assess alternatives for intrapartum chemoprophylaxis in women allergic to penicillin and colonized by a GBS strain resistant to these antibiotics. METHODS:Multicenter study performed with 131 strains isolated between 1997-2002 from newborns diagnosed with early-onset GBS disease and 479 strains collected in 2002 from the vagina or rectum of pregnant women. RESULTS:All the GBS (100%) were susceptible to penicillin, ampicillin, vancomycin, quinupristin/dalfopristin, levofloxacin and teicoplanin. Resistance rates were as follows: 12.45% to erythromycin and azithromycin, 11.80% to clindamycin, 11.31%, to josamycin, 1.80% to telithromycin and 0.32% to fosfomycin. Seventy-nine strains had a constitutive MLSB phenotype of resistance, 4 an inducible MLSB phenotype, 3 an M phenotype and 3 were resistant to clindamycin but susceptible to macrolides. The MIC for erythromycin and azithromycin was > 32 mg/L in more than 85% of GBS strains with a constitutive MLSB phenotype, from 0.5 to 4 mg/L in those with an inducible MLSB, and 4 mg/L in those with phenotype M. Fifty-one telithromycin-sensitive strains (all with a constitutive MLSB phenotype) showed induced resistance to telithromycin when erythromycin was present. No significant differences in antimicrobial resistance were found between GBS strains producing invasive neonatal disease and maternal isolates, or among strains from different geographic areas. CONCLUSIONS:The high rate of resistance to macrolides and lincosamides in our area makes susceptibility testing mandatory for GBS strains isolated from pregnant women allergic to penicillin.
journal_name
Enferm Infecc Microbiol Clinjournal_title
Enfermedades infecciosas y microbiologia clinicaauthors
González JJ,Andreu A,Grupo de Estudio de Infección Perinatal, Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica.doi
10.1157/13059822subject
Has Abstractpub_date
2004-05-01 00:00:00pages
286-91issue
5eissn
0213-005Xissn
1578-1852pii
13059822journal_volume
22pub_type
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journal_title:Enfermedades infecciosas y microbiologia clinica
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abstract::The role of respiratory viruses in community-acquired pneumonia (CAP) in human immunodeficiency virus (HIV)-infected patients has not been extensively investigated. The objective was to study the implication of respiratory viruses in HIV patients with CAP, through a prospective, three-year study in a third-level hospi...
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journal_title:Enfermedades infecciosas y microbiologia clinica
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journal_title:Enfermedades infecciosas y microbiologia clinica
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journal_title:Enfermedades infecciosas y microbiologia clinica
pub_type: 杂志文章,多中心研究
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journal_title:Enfermedades infecciosas y microbiologia clinica
pub_type: 杂志文章,多中心研究
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