Escherichia coli

Antibiogram - Escherichia coli
Number of Isolates Identified - 4756
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AntibioticPercentNumber
SusceptibleIsolates Tested
Ampicillin (Am) 52 4273
Amikacin (Ak) 99 2539
Amoxicillin/clavulanate (Aug) 83 690
Ampicillin/sulbactam (A/S) 59 3716
Aztreonam (Azt) 93 3923
Cefepime (Cpm) 94 4273
Cefazolin (Cfz) 86 1523
Cefuroxime (Crm) 91 3440
Cefotaxime (Cft) 94 1706
Cefoxitin (Cfx) 96 207
Ceftazidime (Caz) 92 3923
Ceftriaxone (Cax) 93 4756
Cephalothin (Cf) 54 1734
Ciprofloxacin (Cp) 78 4756
Ertapenem (Etp) 99 3923
Gentamicin (Gm) 92 4756
Imipenem (Imp) 100 1706
Levofloxacin (Lvx) 78 4273
Meropenem (Mem) 99 4756
Nitrofurantoin (Fd) 98 4466
Piperacillin (Pi) 56 1706
Piperacillin-tazobactam (P/T) 98 4756
Tetracycline (Te) 76 1499
Tigecycline (TGC) 99 3716
Tobramycin (To) 92 4756
Trimethoprim/sulfa (T/S) 75 4756

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 09/26/2017