Streptococcus, Group B

Antibiotic
% Susceptible
 
Antibiotic
% Susceptible
Ampicillin
+
   Imipenem
+
Azithromycin
+/-
   Levofloxacin
97
Aztreonam
-
   Meropenem
+
Cefazolin
100
   Moxifloxacin
+
Cefepime
+
   Nitrofurantoin
&
Ceftazidime
+
   Oxacillin/Naf
+
Ceftriaxone
100
   Penicillin
100
Cefuroxime
+
   Piperacillin
+
Ciprofloxacin
+/-
   Piperacillin/tazo
+
Clarithromycin
+
   Ticarcillin/Clav
+
Clindamycin
79
   Tobramycin
-
Doxycycline
37
   TMP/SMX
13
Erythromycin
62
   Unasyn/Aug
+
Gentamicin
-
   Vancomycin
+
 
   

Comments:  

 

Numeric data represent local susceptibility data.
(+) = usually effective or >60% susceptible; (+/-) = clinical trials lacking or 30-60% susceptible; (-) = not effective clinically or <30% susceptible - Adapted with permission from The Sanford Guide to Antimicrobial Therapy 2007
(*) Local (non-Sanford Guide) opinion
(S) = synergistic with penicillin/ampicillin;
(&) nitrofurantoin only useful for lower tract urinary tract infections