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Table 1 Antimicrobial susceptibility profiles for invasive (Wisconsin 1998–2002) and colonizing (Michigan 2001) group B streptococcal isolates

From: Frequency of antimicrobial resistance among invasive and colonizing Group B Streptococcal isolates

  Invasive isolates (n= 486) Colonizing isolates (n= 167)
Antibiotic Susceptible % Intermediate % Resistant % Susceptible % Intermediate % Resistant %
Amplicillin 100 0 0 100 0 0
Cefazolin 99.4 0.6 0 99.4 0.6 0
Clindamycin 80.0 0 20.0 59.3 0 40.71
Erythromycin 75.5 0 24.5 58.1 0 41.91
Imipenem 100 0 0 100 0 0
Levofloxacin 99.6 0 0.4 99.4 0 0.6
Linezolid 100 0 0 100 0 0
Penicillin 100 0 0 100 0 0
Quinupristin-dalfopristin 100 0 0 100 0 0
Vancomycin 100 0 0 100 0 0
  1. 1: Significantly different (P <.001) from the value for invasive isolates