title: Antibiotic susceptibilities of group C and group G streptococci isolated from patients with invasive infections: evidence of vancomycin tolerance among group G serotypes.
abstract: A retrospective review of medical records for 32 patients with invasive group C streptococcus (GCS) or group G streptococcus (GGS) infections was performed. MICs and minimum bactericidal concentrations (MBCs) of penicillin, erythromycin, and vancomycin for all isolates were obtained. Tolerance of vancomycin, defined as an MBC 32 or more times higher than the MIC, was exhibited by 18 GGS isolates (54%). The identification of tolerance in clinical isolates of GGS and GCS may have clinical implications in treating these seriously ill patients.
authors.affiliation: Division of Pediatric Infectious Diseases, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19899, USA.
authors.forename: T
authors.initials: T
authors.lastname: Zaoutis
authors.forename: B
authors.initials: B
authors.lastname: Schneider
authors.forename: L
authors.initials: L
authors.lastname: Steele Moore
authors.forename: J D
authors.initials: JD
authors.lastname: Klein
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D012189:Retrospective Studies; D012703:Serotyping; D013290:Streptococcal Infections / Q000382:microbiology*; D013291:Streptococcus / Q000187:drug effects*; D014640:Vancomycin / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D014640:Vancomycin