An ELISA kit (TECRA™) for the detection of Listeria spp. was evaluated for its ability to detect these organisms in naturally contaminated meat and in environmental samples from meat processing plants. Of the 170 samples examined, Listeria monocytogenes and/or L. innocua were detected in 74 by enrichment and selective plating. Testing of the enrichment broths with the ELISA kit detected 72 of these positive samples and gave 2 false-negative and 2 false-positive reactions.

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