Division of Epidemiology, Environmental and Occupational Health
Epidemiology Surveillance System
1995-1997 Report

Exhibit 8 :
Drug Resistance Profile in Vancomycin Resistant Enterococci Blood Isolates,
1995-1997


    E. faecium E. faecalis Enterococcus spp. E. gallinarium E. avium
Antibiotic Year %R n %R n %R n %R n %R n
                       
  95 97.81% 183 42.11% 19 84.21% 19 - - 100.00% 2
Penicillin 96 99.10% 221 18.18% 22 100.00% 36 - - 50.00% 2
  97 98.07% 207 35.48% 31 94.23% 52 100.00% 10 80.00% 5
Oxacillin 95 90.91% 11 100.00% 2 100.00% 2 - - - -
/Methicillin 96 100.00% 21 - - 100.00% 6 - - - -
/Nafcillin 97 100.00% 14 - - 100.00% 12 - - - -
  95 96.19% 236 34.48% 29 86.05% 43 100.00% 1 50.00% 2
Ampicilin 96 87.76% 286 14.29% 35 93.33% 60 - - 100.00% 2
  97 97.48% 318 24.44% 45 95.31% 64 100.00% 10 80.00% 5
  95 87.50% 72 40.00% 5 87.50% 8 - - - -
Imipenem 96 90.80% 87 0.00% 5 77.78% 9 - - - -
  97 86.59% 82 0.00% 7 80.00% 5 - - - -
  95 68.52% 108 82.35% 17 69.23% 26 0.00% 1 100.00% 1
Gentamicin 96 73.20% 97 80.00% 15 65.52% 29 - - - -
  97 76.09% 92 82.35% 17 84.62% 26 100.00% 3 - -
  95 79.17% 72 75.00% 12 69.23% 13 0.00% 1 100.00% 1
Streptomycin 96 82.69% 52 100.00% 9 100.00% 17 - - - -
  97 84.13% 63 85.71% 14 60.00% 10 - - - -
  95 97.53% 81 83.33% 6 90.91% 11 - - - -
Erythromycin 96 96.19% 105 100.00% 5 100.00% 13 - - 0.00% 1
  97 94.94% 79 77.78% 9 90.48% 21 - - - -
  95 98.63% 73 100.00% 10 100.00% 3 - - - -
Ciprofloxacin 96 97.62% 126 100.00% 9 83.33% 12 - - - -
  97 98.08% 104 87.50% 16 93.55% 31 100.00% 5 50.00% 2
  95 93.33% 15 100.00% 1 100.00% 10 - - - -
Ofloxacin 96 94.87% 39 - - 88.89% 9 - - - -
  97 100.00% 36 85.71% 7 85.71% 7 - - - -
  95 2.53% 79 0.00% 3 0.00% 7 - - - -
Chloramphenicol 96 8.60% 93 50.00% 2 16.67% 12 - - - -
  97 1.36% 147 44.44% 9 10.00% 20 88.89% 9 0.00% 3
  95 41.57% 166 31.82% 22 52.78% 36 - - 50.00% 2
Tetracyclin 96 36.79% 212 33.33% 15 39.29% 56 - - 0.00% 2
  97 48.04% 204 56.00% 25 60.00% 60 75.00% 8 60.00% 5
  95 42.31% 26 33.33% 3 50.00% 6 - - - -
Trimethoprim 96 59.09% 22 - - 70.00% 10 - - - -
/Sulfamethoxazole 97 62.50% 16 25.00% 4 75.00% 8 - - - -
n = Number of isolates tested for the specific antibiotic.            

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