Occurrence of Listeria species in prepacked retail sandwiches.

摘要: A survey of 725 prepacked sandwiches was conducted examining for the presence on enrichment, and by plate count, Listeria species. Sandwiches were found to contain sp. more frequently than their component foods. Chicken, beef bacon fillings associated with frequent isolation. Salad also isolation, but increase not significant. On over 15% contained L. innocua monocytogenes only species isolated count at numbers > or = 100 cfu/g (1.5% total samples). Potentially hazardous levels (defined as 10(3) cfu/g) in two examined (0.3%), indicating that although Total Viable Counts (TVCs) may often be high, risk listeriosis vulnerable individuals from is relatively low. It important distinguish consuming potentially a pathogen food contracting illness result such an event.