What are the rationales for the change of Listeria monocytogenes limit in the Guidelines?
Some studies showed that most cases of listeriosis resulted from consumption of high numbers of the pathogen and are associated with the consumption of foods that do not meet standards for Listeria monocytogenes in food, whether that standard is zero tolerance or 100 cfu/ g. On the other hand, certain foods are of relatively high risk and certain populations are more susceptible to the infection. As such, more stringent control applies to certain food items. Such approach is also adopted by other developed countries.Food under refrigeration Unlike other foodborne pathogens, Listeria monocytogenes is able to grow under refrigerated temperature. Hence, its number may increase under refrigerated storage. Higher level of contamination and longer duration of storage contribute to higher risk. Therefore foods kept under refrigeration at the point of sale are subject to a more stringent Listeria monocytogenes limit i.e. not detected in 25g.Frozen food Listeria monocytogenes is able to grow be
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