listeria surveillance, decision making, and corrective actions at retail

Listeria Surveillance, Decision Making, and

Corrective Actions at RetailCarrie Rigdon, PhD

Rapid Response Team SupervisorDairy & Food Inspection Division

118th AFDO Annual Educational Conference, Denver, CO Risk-Based Environmental Monitoring and Decision MakingJune 23, 2014

Routine Sampling Plan• Why: Identify issues in potentially risky

foods & environments• What: Food and environmental samples at

retail and manufacturing• When: New assignments 2 to 4 times a

year

Micro Samples by Year – All Sampling

2009 2010 2011 2012 2013 20140

100

200

300

400

500

600

700

800

900

462

820

457

133

332

144

1463

7 14 8 3

SamplesPositive

3.0% 7.5% 1.5% 10.5% 2.4% 2.0%% Positive:

Positives by Year – All Sampling

2009 2010 2011 2012 2013 20140

10

20

30

40

50

60

70

4 41 0 0 0

10

59

7

14

26

3

SalmonellaListeria

Listeria Positives by Year – Environmental Sampling

2009 2010 2011 2012 2013 20140

50

100

150

200

250

300

350

106

315

264

133

231

141

0

41

7 14 253

SamplesPositives

0% 13.0% 2.6% 10.5% 10.8% 2.1%% Positive:

Listeria Species – Environmental Sampling

2010 2011 2012 2013 20140

5

10

15

20

25

30

35

40

45

Locations of Listeria 2010-14

Drain

Floor

Cart Wheels

Table

Mat

Floor-Wall juncture

Door hadle/seal

Inside service case

Condenser pan

0 5 10 15 20 25 30 35 40

35

14

12

8

6

5

5

4

1

Why does MDA look for Listeria at Retail?

• Monitor operator’s control for risks where RTE PHF are prepared, handled, or stored

• Prevent adulteration and possibility for adulteration

What happens when Listeria is found?

• Assess whether firm has lost control of their process

• Bring operator back into compliance – adulteration statues – Minn. Stat. 34A.02 (Adulteration),– Minn. Stat. 31.02 (Prohibited Acts), and – Minnesota Administrative Rule

Chapter 4626.0015 (Food Safety under Food Code)• Corrective Action Plan best guidance for

accomplishing this

Firm Actions: Cleaning, CAP, and Verification

• Intensely clean and sanitize• Assess causes and contributing factors• Write a Corrective Action Plan (CAP)

– Cleaning and Sanitizing – how? where?– Equipment and employee flow– Repairs to equipment or structure– Employee training

• Verify that actions have been effective = firm sampling

MDA Actions• Provide guidance but not act as their QA• Review CAP• Confirmatory sampling• Visit operator to observe whether control

measures were implemented

Questions?

Carrie Rigdoncarrie.rigdon@state.mn.us651-201-6453