Re: Tolerance for L. monocytogenes

From: George Chang (gwchang@uclink4.berkeley.edu)
Date: Thu Mar 02 2000 - 14:25:05 PST

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    Oskar Skulason writes...

    >Does anyone have any information about the tolerance level for Listeria
    >monocytogenes in the EU-countries?
    >
    >It is different between countries and I think it is interesting to compare
    >the differences within EU and the zero tolerance level in the U.S.

    Hi Oskar,

            I am glad that you asked. I would also be interested.

            Of course we both know that "zero tolerance" is a statistical
    term, and that there is a reasonable chance that a batch with a low
    concentration of the target bacteria will be found to have "zero
    bacteria." I have my students calculate those probabilities each
    time I teach food microbiology.

    Best regards,
    George Chang

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