1. Recalls & Tracebacks Carrie Rigdon, PhD, MPH
Dairy and Food Inspection Division
Rapid Response Team Project Planner

2. Dairy and Food Inspection Division
Dairy farms, processors, transport vehicles
Food processing, grocery stores
Meat processing
Feed mills

4. Minnesota Departments of Health, Agriculture Laboratory/Program Buildings

5. Foodborne Disease Detection Timeline
Farm
Transport
Processing
Distribution
Preparation
Exposure
Incubation
Illness
Death

6. Foodborne Disease Detection Timeline
Food Monitoring Programs
Human disease surveillance
Farm
Transport
Processing
Distribution
Preparation
Exposure
Incubation
Illness
Death

7. 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

8. Statutory Authority

9. Statutory Authority

10. 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

11. 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

13. 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

14. 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

15. 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

20. 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

22. Institutional link,
Implication of PB
1st 9 cases in MN

23. FDA Investigation

24. Salmonella Outbreak: Products Tested

25. match the outbreak strain?
$64,000 Question
Will the food isolate
match the outbreak strain?

26. 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

27. MDH Epi
MDA Food
Inspection
MDA Lab
MDH Lab

28. Questions? Please visit our website: Carrie.Rigdon@state.mn.us
Click  Food From Farm to Table
Food Safety