632-633 / 1195
Table 8.
Probability of Detection Results – VIDAS LPT Presumptive vs. Confirmed
1
Matrix
Strain
MPN
a
/test portion
N
c
LPT Presumptive
LPT Confirmed
dPOD
CP
g
95% CI
h
x
d
POD
CP
e
95% CI
x
POD
CC
f
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
9
0.45
0.26, 0.66
0
-0.28, 0.28
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
15
0.75
0.53, 0.89
0
-0.26, 0.26
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
6
0.30
0.15, 0.52
0
-0.27, 0.27
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
11
0.55
0.34, 0.74
0
-0.28, 0.28
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
16
0.80
0.58-0.91
0
-0.25, 0.25
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
11
0.55
0.34-0.74
0
-0.28, 0.28
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
16
0.80
0.58-0.91
0
-0.25, 0.25
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
14
0.70
0.48-0.85
0
-0.27, 0.27
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
12
0.60
0.38-0.78
0
-0.28, 0.28
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
20
1.0
0.84-1.00
0
-0.16, 0.16
Peanut butter
-25g-
L. seeligeri
ATCC 35697
control
5
0
0
0.00, 0.43
0
0
0.00, 0.43
0
-0.43, 0.43
1.13
20
15
0.75
0.53-0.88
15
0.75
0.53-0.88
0
-0.26, 0.26
2