TABLE 3.
Time after inoculation (h) | Mean log10 cells/coupon (SD) on indicated surface (n = 3)
|
|||||||
---|---|---|---|---|---|---|---|---|
Paper
|
SS
|
Glass
|
PE
|
|||||
ATCC 23343 | ATCC 11668 | ATCC 23343 | ATCC 11668 | ATCC 23343 | ATCC 11668 | ATCC 23343 | ATCC 11668 | |
0 | 4.88 (0.08) | 6.06 (1.31) | 5.11 (0.35) | 3.04 (2.71) | 4.53 (1.34) | 0.00 (0.00)a | 4.77 (0.36) | 4.59 (0.22) |
2 | 5.30 (0.03) | 4.38 (0.29) | 2.75 (2.41) | 3.10 (0.11) | 3.31 (1.19) | 3.27 (0.25) | 4.18 (0.18) | 4.54 (0.05) |
4 | 4.31 (0.11) | 4.17 (0.13) | 3.58 (0.56) | 3.57 (0.08) | 3.67 (0.65) | 2.60 (0.45) | 3.98 (0.21) | 4.44 (0.09) |
6 | 4.18 (0.32) | 3.80 (0.18) | 2.72 (0.75) | 3.95 (0.14) | 2.86 (0.83) | 1.79 (0.21) | 1.81 (1.68) | 3.37 (0.44) |
24 | 4.36 (0.21) | 3.76 (0.15) | 1.77 (0.31) | 1.82 (0.07) | 1.66 (0.37) | 1.56 (0.55) | 0.37 (0.64) | 2.31 (0.54) |
72 | 3.94 (0.82) | 3.38 (0.02) | 1.35 (0.13) | 0.33 (0.58) | 1.41 (0.60) | 2.24 (0.63) | 1.16 (0.41) | 2.00 (0.46) |
168 | 3.36 (0.37) | 3.61 (0.17) | 0.40 (0.70) | 0.00 (0.00) | 0.80 (0.70) | 1.18 (0.56) | 0.20 (0.35) | 2.26 (0.78) |
336 | 3.18 (0.84) | 3.67 (0.23) | 0.43 (0.74) | 0.25 (0.43) | 0.72 (0.79) | 0.25 (0.43) | 0.00 (0.00) | 1.70 (0.31) |
504 | 2.88 (0.77) | 2.71 (0.68) | 0.33 (0.58) | NDb | 1.43 (0.60) | 0.73 (0.72) | ND | 1.33 (1.16) |
672 | 2.45 (0.52) | 2.17 (0.38) | ND | ND | ND | 1.62 (0.65) | ND | ND |
840 | ND | 2.72 (0.46) | ND | ND | ND | ND | ND | ND |
1,008 | ND | 1.89 (0.22) | ND | ND | ND | ND | ND | ND |
Outlier due to sampling error which was not included in the statistical analysis.
ND, not determined.