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Different Species of Listeria in Ready-to-Eat Food Stuffs

In product testing for Listeria in the Ready-to-eat food industry, is some Listeria safe for human consumption?
How relevent is the question, if a ready-to-eat product contains cheese?

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The genus Listeria includes other species such as Listeria ivanovii, Listeria seeligeri, Listeria innocua and Listeria welshimeri, apart from Listeria monocytogenes. L. monocytogenes causes both human and animal disease, while L. ivanovii is chiefly associated with disease (specifically abortions) in sheep. Human infections by this organism is found to be extremely rare (Cummins et al., 1994; Wesley, 1999).

In product testing for Listeria in the Ready-to-eat food industry, the species of Listeria that are safe for human consumption are Listeria seeligeri, Listeria innocua and Listeria welshimeri as they are nonpathogenic and nonhemolytic. Listeria seeligeri has the ...

Solution Summary

The genus Listeria includes other species such as Listeria ivanovii, Listeria seeligeri, Listeria innocua and Listeria welshimeri, apart from Listeria monocytogenes. In product testing for Listeria in the Ready-to-eat food industry, the species of Listeria that are safe for human consumption are Listeria seeligeri, Listeria innocua and Listeria welshimeri as they are nonpathogenic and nonhemolytic.

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