Antibiotic susceptibility and prevalence of erythromycin ribosomal methylase gene, erm(B) in Streptococcus spp.

The aim of this study was to investigate drug resistance and the genetic relatedness of erythromycin-resistant Streptococcus spp. from different animals and humans in Taiwan. Cumulatively, 248 isolates were collected from 15 animal species and human patients and the susceptibilities of the isolates to six antimicrobial agents including azithromycin (AZI), clarithromycin (CLAR), erythromycin (ERY), spiramycin (SPIR), amoxicillin (AMO), and enrofloxacin (ENRO) were determined by the agar dilution method.