Antibiogram - Escherichia coli
Number of Isolates Identified - 6331
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Antibiotic Percent Number
Susceptible Isolates Tested
Ampicillin (Am) 58 5856
Amikacin (Ak) 99 2275
Amoxicillin/clavulanate (Aug) 88 1876
Ampicillin/sulbactam (A/S) 66 6331
Aztreonam (Azt) 92 1876
Cefepime (Cpm) 91 4079
Cefazolin (Cfz) 85 6331
Cefuroxime (Crm)    
Cefotaxime (Cft) 91 1401
Cefotetan (Ctt)    
Ceftazidime (Caz) 91 5422
Ceftriaxone (Cax) 91 5463
Cephalothin (Cf)    
Ciprofloxacin (Cp) 84 6331
Ertapenem (Etp) 99 2744
Gentamicin (Gm) 93 6331
Imipenem (Imp) 99 1384
Levofloxacin (Lvx) 87 4052
Meropenem (Mem) 99 4554
Nitrofurantoin (Fd) 98 5227
Piperacillin-tazobactam (P/T) 98 6331
Tetracycline (Te) 76 1206
Tigecycline (TGC) 92 670
Tobramycin (To) 93 6331
Trimethoprim/sulfa (T/S) 75 6331

To read this antibiogram:

  1. Each antibiotic is presented in three columns. The first column lists the name of the antibiotic. The middle column represents susceptibility in percent to that antibiotic. The 3rd column represents the number of isolates tested for that specific antibiotic.
  2. Susceptibility greater than or equal to 90% is highlighted in GREEN, 60%-89% in YELLOW, and less than 60% in RED. Susceptibility not reaching 100% is also labeled as 99%.
  3. Nitrofurantoin is tested for urine specimens only.
  4. The susceptibility result for Streptococcus pneumoniae is a combination of screening test and E-test results.
  5. CLSI performance standards for antimicrobial susceptibility testing were applied. CLSI stands for Clinical and Laboratory Standards Institute (Formerly NCCLS, The National Committee for Clinical Laboratory Standards).
  6. Empty cells indicate that susceptibility testing for that specific organism and antibiotic is not recommended or complete testing data was not available or the number is too small for a valid reporting.

Last modified on 08/15/2023