880 / 1195
(POD 0.64; CI 0.45-0.80) (Table 2, 3). Similarly, the USDA reference method was
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able to detect 15 positives of the 25 samples. The test method was equivalent to
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the USDA method (dPOD=0.04; CI -0.21-0.29, chi sq. 0.08) (Table 3) in detecting
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L. monocytogenes
in deli ham.
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Deli Turkey: Deli turkey enrichments had 11 positives out of 25 low inoculated
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samples. The LMX successfully detected 11 positives out of 25 samples which
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were confirmed by the AOAC method without any false negatives or false positives
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(POD 0.44; CI 0.27-0.63) (Table 2, 3). Similarly, the USDA reference method was
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able to detect 8 positives of the 25 samples. The test method was equivalent to the
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USDA method (dPOD=0.12; CI -0.14-0.36, chi sq. 0.75) (Table 3) in detecting
L.
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monocytogenes
in deli turkey.
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Conclusion
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The LMX method performed equally well as compared to the reference method in
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detecting
Listeria monocytogenes
in ground meat, ready-to-eat meats (deli and
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ham) and Mexican soft-cheese (queso fresco).
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PTM Certification Modification Report