| Affiliation: | (1) Microbiology Department, Hospital Donostia, Paseo Dr. Beguiristain s/n, 20014 San Sebastián, Spain;(2) Microbiology Department, Hospital !["ldquo"]("/content/h7d1nhl238umcgjk/xlarge8220.gif") Marques de Valdecilla!["rdquo"]("/content/h7d1nhl238umcgjk/xlarge8221.gif") , Avenida Valdecilla s/n, 39008 Santander, Spain;(3) Microbiology Laboratory, Centro Especialidades Arguelles, Quintana 11, 28008 Madrid, Spain |
| Abstract: | Reported here is an unusual cluster of non-invasive infections caused by an emm28 Streptococcus pyogenes strain resistant to bacitracin, erythromycin and clindamycin detected in Santander, Spain. Since one of the characteristics of group A streptococci is their almost uniform susceptibility to bacitracin, this finding was unusual, and a search for bacitracin-resistant Streptococcus pyogenes strains was conducted in two other distant cities of Spain (Madrid and San Sebastián) where their presence was confirmed. These strains were frequently associated with erythromycin- and clindamycin-resistance, and most of them belonged to a unique emm28 T28, ST52 clone. |
