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Table 1 Reduction in bacterial burden after 1 h of contact with Copper Armour™ as compared to control surfaces

From: Antimicrobial properties of a novel copper-based composite coating with potential for use in healthcare facilities

Microorganism Batch Inoculum (cfu) Number of cfu recovered per sample * Reduction (%) **
Control Copper ArmourTm
S. aureus 1 4.3 × 107 1.2 × 106; 3.0 × 106; 1.8 × 106; 1.9 × 106; 3.1 × 106 < 1;< 1;< 1;< 1;< 1 >  99.9
2 1.5 × 107 1.4 × 106; 1.1 × 106; 1.1 × 106; 2.0 × 106; 1.2 × 106 < 1;< 1;< 1;< 1;< 1 >  99.9
P. aeruginosa 1 1.6 × 108 4.4 × 107; 2.1 × 107; 7.2 × 106; 4.4 × 107; 9.3 × 106 < 1;< 1;< 1;< 1;< 1 >  99.9
2 1.8 × 108 1.1 × 107; 2.8 × 107; 1.2 × 107; 1.0 × 107; 1.1 × 107 < 1;< 1;< 1;< 1;< 1 >  99.9
E. coli O157:H7 1 1.9 × 107 8.1 × 105; 4.3 × 106; 4.1 × 106; 5.4 × 106; 9.6 × 105 < 1;< 1;< 1;< 1;< 1 >  99.9
2 2.4 × 107 5.3 × 106; 3.8 × 106; 2.4 × 106; 2.5 × 106; 7.9 × 105 < 1;< 1;< 1;< 1;< 1 >  99.9
L. monocytogenes 1 3.2 × 107 7.2 × 106; 8.7 × 106; 9.4 × 106; 7.3 × 106; 6.3 × 106 < 1;< 1;< 1;< 1;< 1 >  99.9
2 1.6 × 107 9.7 × 106; 8.0 × 106; 7.3 × 106; 7.7 × 106; 7.8 × 106 < 1;< 1;< 1;< 1;< 1 >  99.9
  1. * Each value corresponds to the average of duplicates of cfu recovered in each one of the five samples evaluated per production batch. ** As compared with control samples