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Table 2 Transfer of bacteria from recently contaminated fingertips (wet inoculum) and old contamination (dry inoculum) to a donor surface (keyboard key) and when in the presence of different soiling conditions; n = 10

From: Effect of poly-hexamethylene biguanide hydrochloride (PHMB) treated non-sterile medical gloves upon the transmission of Streptococcus pyogenes, carbapenem-resistant E. coli, MRSA and Klebsiella pneumoniae from contact surfaces

  Median Log10 CFUs transferred (Inter-Quartile Range)
Organism Un-treated (control) glove PHMB-treated glove
Wet Inoculum No soiling
(DW)
Moderate soiling
(0.5% BSA)
Heavy soiling
(Blood)
No soiling
(DW)
Moderate soiling
(0.5% BSA)
Heavy soiling
(Blood)
MRSA 4.20 (4.15–4.21) 4.08 (4.06–4.11) 4.16 (4.06–4.20) 4.06 (3.96–4.07) 4.07 (4.05–4.08) 3.99 (3.95–4.09)
Carbapenem-resistant E.coli 4.12 (4.09–4.15) 4.17 (4.12–4.11) 4.13 (4.12–4.23) 4.08 (4.08–4.13) 4.10 (4.08–4.13) 4.19 (4.16–4.26)
K. pneumoniae 4.39 (4.36–4.40) 4.29 (4.25–4.45) 4.20 (4.19–4.34) 4.39 (4.25–4.40) 4.28 (4.27–4.31) 4.35 (4.29–4.39)
S. pyogenes 4.54 (4.47–4.59) 4.65 (4.60–4.66) 4.75 (4.73–4.780 4.59 (4.25–4.40) 4.54 (4.41–4.57) 4.52 (4.45–4.56)
Dry Inoculum No soiling
(DW)
Moderate soiling
(0.5% BSA)
Heavy soiling
(Blood)
No soiling
(DW)
Moderate soiling
(0.5% BSA)
Heavy soiling
(Blood)
MRSA 4.09 (4.07–4.20) 4.21 (4.20–4.23) 4.21 (4.17–4.23) <0.301 <0.301 1.68 (1.64–1.72)
Carbapenem-resistant E.coli 3.74 (3.69–3.80) 4.12 (4.10–4.16) 4.19 (4.15–4.27) <0.301 <0.301 2.12 (2.05–2.40)
K. pneumoniae 4.36 (4.33–4.39) 4.34 (4.29–4.40) 4.43 (4.39–4.48) <0.301 <0.301 1.38 (1.38–1.60)
S. pyogenes 4.29 (4.26–4.34) 4.59 (4.57–4.61) 4.66 (4.58–4.69) <0.301 <0.301 2.77 (2.70–2.82)
  1. Note: Numbers below the detection limit (2 CFU) are expressed as <0.301 Log10 numbers