Antibiotic Susceptibilities of Group C and Group G Streptococci Isolated from Patients with Invasive Infections: Evidence of Vancomycin Tolerance among Group G Serotypes

Author:

Zaoutis Theoklis12,Schneider Barbara3,Steele Moore Lynn3,Klein Joel D.12

Affiliation:

1. Division of Pediatric Infectious Diseases, Alfred I. duPont Hospital for Children,1 and

2. Jefferson Medical College, Philadelphia, Pennsylvania2

3. Infectious Diseases Laboratory, Christiana Care Health System,3 Wilmington, Delaware, and

Abstract

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.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference37 articles.

1. American Academy of Pediatrics Non-group A or B streptococcal and enterococcal infections Red book: report of the Committee on Infectious Diseases 24th ed. Peter G. 1997 501 502 American Academy of Pediatrics Elk Grove Village Ill

2. Group G streptococcal bacteremia: clinical study and review of the literature;Auckenthaler R.;Rev. Infect. Dis.,1983

3. In vitro susceptibility of group G streptococci to ten antimicrobial agents with broad Gram-positive spectra;Bayer A. S.;Clin. Ther.,1983

4. Group C β-hemolytic streptococcal bacteremia;Berenguer J.;Diagn. Microbiol. Infect. Dis.,1992

5. Group C streptococcal bacteremia: analysis of 88 cases;Bradley S. F.;Rev. Infect. Dis.,1991

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