The isolation of a small gram-positive, catalase-positive rod with a narrow zone of beta hemolysis isolated from blood or CSF should be used as strong presumptive evidence for:

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L.monocytogenes ferments glucose and is Voges-Proskauer- and esculin-positive.The isolation of a small gram-positive, catalase-positive rod with a narrow zone of beta hemolysis isolated from blood or CSF should be used as strong presumptive evidence for listeriosis.

The Isolation of a Small Gram-Positive, Catalase-Positive Rod with a Narrow