Streptococcus viridans group    (2018 Data)

Antibiotic
% Susceptible
 
Antibiotic
% Susceptible
Ampicillin
83
  Imipenem
+
Azithromycin
44
  Levofloxacin
96
Aztreonam
-*
  Meropenem
94
Cefazolin
+
  Moxifloxacin
+
Cefepime
92
  Nitrofurantoin
&
Ceftazidime
+/-
  Oxacillin/Naf
+-
Ceftriaxone
96
  Penicillin
88
Cefuroxime
+
  Piperacillin
+
Ciprofloxacin
+-*
  Piperacillin/tazo
+
Clarithromycin
+-*
  Ticarcillin/Clav
+
Clindamycin
72
  Tobramycin
-*
Doxycycline
58
  TMP/SMX
+
Erythromycin
39
  Unasyn/Aug
+
Gentamicin
-*
  Vancomycin
100
 
   

Number of isolates tested: 52

Comments:  

For historical susceptibility data click here

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
(*) Local (non-Sanford Guide) opinion
(S) = synergistic with penicillin/ampicillin;
(&) nitrofurantoin only useful for lower tract urinary tract infections