AIM The aim of this study was to figure the prevalence, phenotypic and genotypic antibiotic resistance (AR) pattern of Staphylococcus aureus isolated from bovine and swine nares. MATERIALS AND METHODS Colonies with typical morphology on Baird-Parker agar supplemented with egg-yolk tellurite emulsion were selected and biochemically/genotypically identified as S. aureus. These strains were furt...

The objectives of this study are to determine the occurrence of antimicrobial resistance (AMR) genes using whole-genome sequence (WGS) of Streptococcus uberis (S. uberis) and Streptococcus dysgalactiae (S. dysgalactiae) isolates, recovered from dairy cows in the Canadian Maritime Provinces. A secondary objective included the exploration of the association between phenotypic AMR and the genomic ...

Streptococcus agalactiae (group B streptococcus [GBS]) is the most common cause of neonatal sepsis (9). Penicillin is used for intrapartum prophylaxis, but erythromycin or clindamycin is recommended for patients allergic to penicillin (3). There are two major mechanisms of erythromycin resistance in S. agalactiae, (i) erythromycin ribosomal methylase, mediated by ermB, ermA, ermTR, or ermC, whi...

Macrolides, such as erythromycin, clarithromycin, and roxithromycin, have been used as long-term chemotherapy for diffuse Pseudomonas aeruginosa panbronchiolitis in Japan (2). In the United Kingdom, azithromycin has been used for cystic fibrosis patients infected with P. aeruginosa (3). Recently, highly macrolide-resistant strains, producing erythromycin esterase (1, 6) or macrolide 29-phosphot...

Sir, Since the early 1990s, most developed countries have experienced a rapid and substantial increase in erythromycin resistance among isolates of Streptococcus pyogenes and Streptococcus pneumoniae, probably related to the increased prescribing of this antibiotic or its novel semisynthetic derivatives. Until recently, the unique mechanism of macrolide resistance recognized in streptococci was...