ermB-mediated erythromycin resistance in Streptococcus uberis from bovine mastitis
Marisa Haenni1, Estelle Saras, Sophie Chaussière
1Agence Française de Sécurité Sanitaire des Aliments, Unité Antibiorésistance et Virulence Bactérienne, 31 Avenue Tony Garnier, 69364 Lyon, France.
Abstract:
The ermB gene was identified in 111 erythromycin resistant isolates of Streptococcus uberis from cases of bovine mastitis associated either with a constitutive (47/111) or an inducible (64/111) phenotype, as well as a phenotypic resistance to all macrolides tested. Resistance to lincosamides was identified in 14 other isolates of S. uberis from bovine mastitis cases and was mainly mediated by the linB gene; resistance conferred by a combination of two genes (linB-lnuD, ermB-linB) was also detected.
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