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

Exhibit 14 :
Drug Resistance Profile in Penicillin Resistant
Streptococci / Enterococci Blood Isolates, 1995-1997


    E. faecium E. faecalis Enterococcus spp. Strep. pneumoniae Strep. viridans
Antibiotic Year %R n %R n %R n %R n %R n
                       
  95 98.25% 171 70.00% 10 93.75% 16 87.50% 8 - -
Ampicilin 96 98.65% 223 75.00% 4 100.00% 36 100.00% 2 57.14% 7
  97 99.48% 193 61.54% 13 98.00% 50 100.00% 11 77.78% 9
  95 79.41% 68 66.67% 3 50.00% 10 71.43% 7 - -
Gentamicin 96 72.31% 65 66.67% 3 64.29% 14 - - 66.67% 3
  97 83.64% 55 75.00% 4 78.95% 19 75.00% 8 0.00% 1
  95 81.08% 37 66.67% 3 66.67% 6 - - - -
Streptomycin 96 72.97% 37 100.00% 2 100.00% 10 - - - -
  97 89.66% 29 50.00% 4 50.00% 10 0.00% 1 - -
  95 96.30% 81 100.00% 4 100.00% 3 18.18% 55 50.00% 2
Erythromycin 96 96.30% 108 - - 87.50% 8 28.57% 35 33.33% 6
  97 97.06% 68 66.67% 3 94.12% 17 28.57% 42 60.00% 15
  95 98.39% 62 100.00% 5 100.00% 2 0.00% 5 - -
Ciprofloxacin 96 98.36% 122 100.00% 1 77.78% 9 0.00% 8 33.33% 6
  97 97.70% 87 75.00% 8 96.30% 27 16.67% 6 100.00% 1
  95 3.23% 62 0.00% 2 0.00% 3 21.62% 37 - -
Chloramphenicol 96 6.10% 82 - - 25.00% 4 19.44% 36 0.00% 3
  97 1.10% 91 50.00% 2 6.67% 15 23.33% 30 0.00% 11
  95 40.41% 146 10.00% 10 66.67% 15 24.00% 25 0.00% 2
Tetracyclin 96 36.55% 197 75.00% 4 35.14% 37 22.73% 22 25.00% 4
  97 47.95% 171 81.82% 11 59.62% 52 39.29% 28 28.57% 14
  95 97.81% 183 80.00% 10 94.12% 17 0.00% 70 0.00% 2
Vancomycin 96 96.48% 227 100.00% 4 94.74% 38 1.59% 63 25.00% 8
  97 98.07% 207 78.57% 14 89.09% 55 0.00% 67 0.00% 14
  95 27.27% 11 - - 66.67% 3 54.55% 11 - -
Trimethoprim 96 56.52% 23 - - 66.67% 3 76.47% 17 33.33% 6
/Sulfamethoxazole 97 50.00% 10 - - 80.00% 5 75.00% 12 0.00% 1
n = Number of isolates tested for the specific antibiotic.             

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