Antimicrobial Susceptibility Profile Index
January 1, 2007 -- December 31, 2007

JMCGH and Other Sites:  Non-Urine Sites Only

Gram Positive Organisms

  1. Coagulase Negative Staph
  2. Enterococcus Species
  3. Staphylococcus Aureus
  4. Streptococcus Pneumoniae

NOTES:

 
     
  • All beta lactam antibiotics are automatically reported as a resistant on an oxacillin (methicillin) resistant Staphylococcus species.  Speciation of Coagulase negative staphylococcus is only performed when specifically requested by the physician.

COMMENTS:

 
     
  • Penicillin sensitive Streptococcus pneumoniae isolates can be considered sensitive to ampicillin, ampicillin/sulbactam, amoxicillin/clavulanic acid, 1st, 2nd, 3rd, and 4th generation cephalosporins.
     
  • Beta hemolytic Streptococcus species have not demonstrated resistance to penicillin or ampicillin therefore susceptibility testing is not routinely performed.  Of the Streptococcus agalactiae performed on isolates recovered from pregnant penicillin allergic women 100% were Penicillin sensitive, 47% were Clindamycin sensitive and 40% were Erythromycin sensitive.  Erythromycin resistant strains cannot be reliably interpreted as Clindamycin sensitive without the addition of the "D Test" to test for inducible resistance.
Beginning in 2007 susceptibility testing will be performed by manual Kirby-Bauer Disk Diffusion Method due to a limitation with the Erythromycin/Streptococcus agalactiae antibiotic/organism combination using the bioMerieux automated identification susceptibility system.
 
     
  • Vancomycin resistant Enterococcus species are speciated and the Vancomycin MIC confirmed by alternative methods.

Coagulase Negative Staph

Number of Isolates:  936

Numbers are percent susceptible -- "( )" indicates percent intermediate

Click on the individual antibiotic below to see its
individual reference values!
Ampicillin ●
Ceftriaxone *Meningitis NA
Ceftriaxone *Non-Meningitis NA
Clindamycin 66(1)
Erythromycin 32(0)
Gentamicin 79(5)
Levofloxacin 38(24)
Linezolid 100
Oxacillin 28(0)
Penicillin 5(0)
Tetracycline 100
Quinupristin/Dalfopr 72(0)
Trimethoprim/Sulfa NA
Vancomycin 100

● = Antibiotic not recommended due to lack of correlation between in vitro results and in vivo activity.
NA = Not Applicable

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Enterococcus Species

Number of Isolates:  298

Numbers are percent susceptible -- "( )" indicates percent intermediate

Click on the individual antibiotic below to see its
individual reference values!
Ampicillin 90(0)
Ceftriaxone *Meningitis NA
Ceftriaxone *Non-Meningitis NA
Clindamycin 0(0)
Erythromycin 13(20)
Gentamicin ●
Levofloxacin 48(1)
Linezolid 99(0)
Oxacillin ●
Penicillin 90(0)
Tetracycline 15(8)
Quinupristin/Dalfopr 40(0)
Trimethoprim/Sulfa NA
Vancomycin 93(1)

● = Antibiotic not recommended due to lack of correlation between in vitro results and in vivo activity.
NA = Not Applicable

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Staphylococcus Aureus

Number of Isolates:  1224

Numbers are percent susceptible -- "( )" indicates percent intermediate

Click on the individual antibiotic below to see its
individual reference values!
Ampicillin ●
Ceftriaxone *Meningitis NA
Ceftriaxone *Non-Meningitis NA
Clindamycin 86(0)
Erythromycin 29(3)
Gentamicin 98(0)
Levofloxacin 65(10)
Linezolid 100
Oxacillin 31(0)
Penicillin 2(0)
Tetracycline 100
Quinupristin/Dalfopr 93(0)
Trimethoprim/Sulfa 99
Vancomycin 100

● = Antibiotic not recommended due to lack of correlation between in vitro results and in vivo activity.
NA = Not Applicable

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Streptococcus Pneumoniae

Number of Isolates:  52

Numbers are percent susceptible -- "( )" indicates percent intermediate

Click on the individual antibiotic below to see its
individual reference values!
Ampicillin ●
Ceftriaxone *Meningitis 91(9)
Ceftriaxone *Non-Meningitis 100
Clindamycin NA
Erythromycin 40(5)
Gentamicin NA
Levofloxacin 100
Linezolid 100
Oxacillin NA
Penicillin 55(26)
Tetracycline NA
Quinupristin/Dalfopr 60(2)
Trimethoprim/Sulfa 66(8)
Vancomycin 100

● = Antibiotic not recommended due to lack of correlation between in vitro results and in vivo activity.
NA = Not Applicable

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