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Prevalence, Levels, and Types of Listeria Monocytogenes in Higher Risk Foods

Investigators
Luchansky, John
Institutions
USDA - Agricultural Research Service
Start date
2009
End date
2010
Objective
Quantify the occurrence of L. monocytogenes in ready-to-eat meat, cheese, and deli-salads obtained from retail establishments. a) Screen foods for the presence/absence of the pathogen; b) Determine levels of the pathogen in positive samples; c) Subtype multiple isolates from each positive sample; d) Conduct proximate composition analyses on selected foods.
More information
Approach: Work with FDA and USDA/FSIS and attendant industry partners to collect/purchase targeted food samples from retail establishments from multiple retail establishments from within four FoodNet States over an 12 to 18-month period. Test samples for presence/absence of the pathogen. Determine levels of the pathogen in each positive sample by direct plating, enrichment, and/or most probable number analyses. Retain multiple isolates from each positive sample for subsequent molecular subtyping.
Funding Source
Agricultural Research Service
Project source
View this project
Project number
1935-41420-015-06R
Accession number
420148
Categories
Listeria
Commodities
Dairy