636-637 / 1195
Table 9.
Probability of Detection Results - VIDAS LPT vs Reference Methods
Matrix
Strain
MPN
a
/test portion
N
b
LPT Method
Reference Method
dPOD
C
f
95% CI
g
X
c
POD
C
d
95% CI
x
POD
R
e
95% CI
Chicken
nuggets
-25g-
L. welshimeri
ATCC35897
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.277
20
5
0.25
0.11, 0.47
5
0.25
0.11, 0.47
0
-0.26, 0.26
Deli ham
-25g-
L. Seeligeri
SM 293 IMVS1150
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.465
20
9
0.45
0.26, 0.66
6
0.30
0.15, 0.52
0.15
-0.14, 0.41
Pepperoni
-25g-
L. Innocua
SM294 ATCC33090
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.944
20
15
0.75
0.53, 0.89
10
0.50
0.30, 0.70
0.25
-0.05, 0.49
Hot dogs
(beef)
-25g-
L. monocytogenes
Serotype 4b
SM ScottA
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.10
20
6
0.30
0.15, 0.52
1
0.05
0.01, 0.24
0.25
0.01, 0.47
Chicken
liver paté
-25g-
L. monocytogenes
Serotype 1
SM 20V ex beef
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.544
20
11
0.55
0.34, 0.74
8
0.40
0.22, 0.61
0.15
-0.15, 0.41
Deli ham
-125g-
L.monocytogenes
ATCC
a
7644
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
1.31
20
16
0.80
0.58-0.91
15
0.75
0.53-0.88
0.05
-0.20, 0.30
Ground beef
-125g-
L.monocytogenes
ATCC 13932
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.94
20
7
0.35
0.18-0.56
7
0.35
0.18-0.56
0
-0.27, 0.27
Deli turkey
-125g-
L.monocytogenes
ATCC 51776
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.70
20
11
0.55
0.34-0.74
12
0.60
0.38-0.78
0.05
-0.32, 0.23
Cooked
shrimp
-25g-
L. grayii
ATCC700545
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.95
20
16
0.80
0.58-0.91
13
0.65
0.43-0.82
0.15
-0.12, 0.40
Smoked
salmon
-25g-
L. monocytogenes
ATCC 19115
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
0.95
20
14
0.70
0.48-0.85
15
0.75
0.53-0.88
0.05
-0.30, 0.21
Cantaloupe
melon
-25g-
L. welshimeri
ATCC 43549
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
12 cfu/melon
20
12
0.60
0.38-0.78
10
0.50
0.0-0.70
0.10
-0.19, 0.37
Bagged
mixed salad
-25g-
L. monocytogenes
ATCC 1971
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
1.31
20
20
1.0
0.84-1.00
15
0.75
0.53-0.88
0.25
0.038, 0.47