American Society for Microbiology, Journal of Clinical Microbiology, 5(41), p. 2166-2169, 2003
DOI: 10.1128/jcm.41.5.2166-2169.2003
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ABSTRACT One hundred ninety-three Streptococcus agalactiae isolates of neonatal origin and 146 isolates from adult women were analyzed for macrolide resistance and investigated for clonality. Among erythromycin-resistant isolates, serotype V turned out to be the most frequent. Comparative pulsed-field gel electrophoresis analysis revealed genetic clustering of resistant strains and predominance of a single clone family within an otherwise heterogeneous serotype V population.