Recalls & Tracebacks Carrie Rigdon, PhD, MPH Dairy and Food Inspection Division Rapid Response Team Project Planner
Dairy and Food Inspection Division Dairy farms, processors, transport vehicles Food processing, grocery stores Meat processing Feed mills
Minnesota Departments of Health, Agriculture Laboratory/Program Buildings
Foodborne Disease Detection Timeline Farm Transport Processing Distribution Preparation Exposure Incubation Illness Death
Foodborne Disease Detection Timeline Food Monitoring Programs Human disease surveillance Farm Transport Processing Distribution Preparation Exposure Incubation Illness Death
Surveillance Systems Food pathogen surveillance Food Monitoring Programs Human disease surveillance Food pathogen surveillance Animal disease surveillance Industry surveillance Consumer complaints Pathogen-specific human disease surveillance Illness notification / complaint systems Syndromic surveillance
Statutory Authority
Statutory Authority
Product Tracing Key Concepts Trace-back is only as good as the epidemiology The more specific, the better the results Oftentimes, solving an outbreak requires good evidence from both the epi and the trace-back
Epidemiology meets Trace-back Cluster of Cases that match by PFGE subtype Common Exposure – Same Restaurant Chain – Varying locations All Cases Consumed Sprout Containing Sandwiches Epidemiology Different Suppliers for each Restaurant “Epi” Trace-back Different Growers for each Supplier Common Seed Source for each Grower Recall – Stop On-going Exposure Common Farm for Seed Source
Date of Isolate Receipt Salmonella Saintpaul Patron Cases Associated with the Good Earth Restaurant by Date of Isolate Receipt in MDH Laboratory, June 2008 7 Two cases name Good Earth 6 5 Number of Cases 4 3 2 1 22 23 24 25 26 27 28 29 30 1 2 3 4 June Date of Isolate Receipt
Date of Isolate Receipt Salmonella Saintpaul Patron Cases Associated with the Good Earth Restaurant by Date of Isolate Receipt in MDH Laboratory, June 2008 7 Second case names Good Earth 6 Visit restaurant 5 Initial case-control study/traceback results to CDC Number of Cases 4 3 2 1 22 23 24 25 26 27 28 29 30 1 2 3 4 June Date of Isolate Receipt
Salmonella Saintpaul Investigation Illustrates: Combination of rapid epidemiological and traceback investigation Identify source as jalapeño peppers Trace peppers back to Texas Joint communications with FDA and CDC
Salmonella Typhimurium Investigation Illustrates: Combination of rapid epidemiological, traceback and laboratory identification Identify source as peanut butter MDA Lab finds Salmonella in King Nut Joint communications with FDA and CDC
Institutional link, Implication of PB 1st 9 cases in MN
FDA Investigation
Salmonella Outbreak: Products Tested
match the outbreak strain? $64,000 Question Will the food isolate match the outbreak strain?
Sample Results Salmonella Typhimurium Salmonella Tennessee 5 lb container of King Nut Creamy Peanut Butter Genetic fingerprint matches nationwide outbreak 35 lb container of Parnell’s Pride Creamy Peanut Butter Salmonella Tennessee Returned from Nursing Home A
MDH Epi MDA Food Inspection MDA Lab MDH Lab
Questions? Please visit our website: Carrie.Rigdon@state.mn.us www.mda.state.mn.us Click Food From Farm to Table Food Safety Carrie.Rigdon@state.mn.us 651-201-6453