Table 1 Colony counts obtained from coated and non-coated surfaces contaminated with microorganisms for 0 − 48 hours
From: Biocidal activity of metalloacid-coated surfaces against multidrug-resistant microorganisms
Microorganisms | Colony counts in average cfu (standard deviation) obtained from wires 0 − 48 hours after contamination with various microorganisms1. Data are from five replicate experiments. | P 2 | ||||||
|---|---|---|---|---|---|---|---|---|
Wires | 0 hr | 2 hr | 4 hr | 6 hr | 24 hr | 48 hr | ||
Pseudomonas aeruginosa | coated | > 2000 (nc) | 1140 (89) | 464 (42) | 114 (60) | 17 (12) | 2 (1) | |
non-coated | > 2000 (nc) | 1540 (89) | 1140 (167) | 1060 (89) | 220 (81) | 33 (21) | < 0.001 | |
Acinetobacter baumannii | coated | 1440 (89) | 430 (110) | 72 (38) | 69 (53) | 21 (30) | < 1 (nc) | |
non-coated | 1420 (84) | 1000 (0) | 590 (55) | 520 (45) | 67 (49) | < 1 (nc) | < 0.001 | |
Escherichia coli | coated | > 2000 (nc) | 790 (55) | 440 (47) | 556 (38) | 46 (8) | < 1 (nc) | |
non-coated | > 2000 (nc) | 1760 (152) | 1500 (0) | 1620 (164) | 90 (70) | 2 (1) | < 0.001 | |
Klebsiella pneumoniae | coated | 1140 (nc) | 860 (89) | 760 (42) | 630 (60) | < 1 (nc) | < 1 (nc) | |
non-coated | 1140 (114) | 1040 (55) | 940 (55) | 880 (45) | 700 (71) | 2 (2) | < 0.001 | |
Enterobacter cloacae | coated | > 2000 (nc) | 1940 (89) | 1500 (0) | 1020 (45) | 810 (22) | 2 (1) | |
non-coated | > 2000 (nc) | > 2000 (nc) | > 2000 (nc) | 1480 (45) | 569 (321) | 2 (2) | 0.031 | |
Mu50 Staphylococcus aureus | coated | 1260 (55) | 438 (36) | 5 (2) | 3 (7) | < 1 (nc) | < 1 (nc) | |
non-coated | 1280 (84) | 1060 (55) | 980 (45) | 760 (55) | 11 (8) | < 1 (nc) | < 0.001 | |
PVL Staphylococcus aureus | coated | > 1500 (nc) | 770 (45) | 540 (89) | 108 (16) | < 1 (nc) | < 1 (nc) | |
non-coated | > 1500 (nc) | 1240 (55) | 880 (27) | 770 (45) | 15 (12) | < 1 (nc) | < 0.001 | |
Enterococcus faecium | coated | 1220 (110) | 124 (33) | 42 (26) | 11 (5) | < 1 (nc) | < 1 (nc) | |
non-coated | 1480 (45) | 470 (76) | 350 (35) | 306 (26) | 3 (2) | < 1 (nc) | < 0.001 | |
Clostridium difficile | coated | 280 (45) | 88 (12) | 86 (15) | 54 (15) | 46 (12) | 55 (22) | |
non-coated | 300 (0) | 100 (17) | 71 (10) | 62 (15) | 55 (4) | 43 (9) | 0.328 | |
Candida albicans | coated | 458 (62) | 319 (23) | 143 (38) | 130 (25) | 11 (7) | < 1 (nc) | |
non-coated | 710 (86) | 482 (63) | 338 (24) | 336 (32) | 4 (4) | < 1 (nc) | < 0.001 | |
Aspergillus fumigatus | coated | 123 (22) | 101 (9) | 43 (12) | 28 (7) | 11 (4) | 4 (4) | |
non-coated | 162 (44) | 96 (18) | 41 (9) | 41 (9) | 34 (5) | 2 (1) | 0.061 | |