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Table 2 Bacterial quantifications (CFU/ml of swab suspension) obtained from the different surfaces and rooms sampled

From: Controlling bacteriological contamination of environmental surfaces at the biological isolation and containment unit of a veterinary teaching hospital

Rooms Surfaces Mean SD Median Min. Max. p-value
CFU/mL of swab suspension
ISOLATION ROOMS
 C1a   9.51 × 102 8.16 2.25 × 102 0 8.15 × 103 0.073
 C2a   4.56 × 102 13.61 1.50 × 102 0 3.00 × 103
 D1b   2.60 × 103 14.03 4.25 × 102 0 5.75 × 104
 D2b   2.46 × 103 22.14 1.00 × 103 0 7.53 × 104
  Examination tables 2.90 × 102 33.04 3.04 × 102 0 5.76 × 103 0.019+
  Cabinets 4.42 × 102 6.09 1.75 × 102 0 1.55 × 103
  Cabinets handles 2c 4.73 × 102 9.83 1.75 × 102 0 3.25 × 103
  Cabinets handles 3d 5.29 × 102 17,73 2.00 × 102 0 3.25 × 103
  Doorknobs 9.85 × 102 16.68 7.33 × 102 0 1.55 × 103
  Faucets 1.25 × 103 3.81 4.00 × 102 5.00 × 101 8.15 × 103
  Cages 4.74 × 103 16.73 1.10 × 103 0 7.53 × 104
STAFF AREA
 Work room 3.96 × 103 2.18 2.93 × 103 1.00 × 102 1.11 × 104  
  Mouse 2,14 × 103 3.15 1,33 × 103 1.00 × 102 7.00 × 103 0.048+
  Keyboard 3.41 × 103 1.19 2,60 × 103 1.05 × 103 6.95 × 103
  Telephone 6.33 × 103 0.87 5,88 × 103 2.00 × 103 1.11 × 104
 Preparatory room 6.98 × 105 1.44 × 102 3.60 × 104 5.00 × 101 1.00 × 109  
  Food/Water bowls 9.86 × 103 13.48 1.50 × 103 5.00 × 101 3.25 × 104 < 0.01+
  Countertop 1.18 × 105 7.37 3.19 × 104 1.50 × 103 5.55 × 105
  Hand-held sponge 2.09 × 107 5.42 2.84 × 107 9.45 × 106 1.00 × 109
  1. a Cat isolation room
  2. b Dog isolation room
  3. c Pool of the last 2 cabinet handles
  4. d Pool of the first 3 cabinet handles
  5. + Statistically significant differences detected between groups