E. coli    (2018 Data)

Antibiotic
% Susceptible
 
Antibiotic
% Susceptible
Ampicillin
66
  Imipenem
100
Azithromycin
-
  Levofloxacin
89
Aztreonam
98
  Meropenem
100
Cefazolin
92
  Moxifloxacin
+
Cefepime
97
  Nitrofurantoin
99&
Ceftazidime
97
  Oxacillin/Naf
-
Ceftriaxone
96
  Penicillin
-
Cefuroxime
94
  Piperacillin
+
Ciprofloxacin
89
  Piperacillin/tazo
99
Clarithromycin
-
  Ticarcillin/Clav
+
Clindamycin
-
  Tobramycin
95
Doxycycline
+
  TMP/SMX
84
Erythromycin
-
  Unasyn/Aug
69
Gentamicin
95
  Vancomycin
-
 
   

Number of isolates tested: 6426

Comments:   Though commonly used to treat UTI's, there is some resistance to TMP/SMX and fluoroquinolones

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