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Unusual resistance patterns in macrolide-resistant Streptococcus pyogenes harbouring erm(A)
Author(s) -
Surbhi MalhotraKumar,
Annarita Mazzariol,
Liesbet Van Heirstraeten,
Christine Lammens,
Peter De Rijk,
Giuseppe Cornaglia,
Herman Goossens
Publication year - 2008
Publication title -
journal of antimicrobial chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.124
H-Index - 194
eISSN - 1460-2091
pISSN - 0305-7453
DOI - 10.1093/jac/dkn432
Subject(s) - streptococcus pyogenes , microbiology and biotechnology , biology , streptococcus pneumoniae , medicine , antibiotics , bacteria , genetics , staphylococcus aureus
We identified erm(A)-harbouring Streptococcus pyogenes that expressed three variant phenotypes: (1) low-level resistance to erythromycin (MICs 1-4 mg/L) but high azithromycin MICs in absolute terms (16-64 mg/L; n=6); (2) same as (1) but with a high clindamycin MIC (256 mg/L; n=1); and (3) high-level constitutive MLS (cMLS) resistance (n=1). Here we analysed the genetic basis of these novel phenotypes.

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