R ANKING OF LMF Flow cha chart of f the he steps eps i inv - - PowerPoint PPT Presentation

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R ANKING OF LMF Flow cha chart of f the he steps eps i inv - - PowerPoint PPT Presentation

R ANKING OF L OW OW M OI URE F OOD OODS IN S UPPOR NG OF OISTUR OR OF M ICROB OGICAL R ISK ISK M ANAGE OF OBIOL OLOG GEME MENT Repor ort o of an an FAO/WHO c con onsu sultation p proc ocess ss O BJECTIVES To undertake a scoping


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SLIDE 1

RANKING

NG OF OF LOW OW MOI OISTUR URE FOOD OODS IN SUPPOR OR OF OF MICROB OBIOL OLOG OGICAL RISK ISK MANAGE GEME MENT

Repor

  • rt o
  • f an

an FAO/WHO c con

  • nsu

sultation p proc

  • cess

ss

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SLIDE 2

OBJECTIVES

 To undertake a scoping systematic review and

analysis of the available knowledge on foodborne illness linked to LMF, microbial contamination of LMF and interventions available for the control of LMF.

 To develop and apply a multi-criteria decision

analysis approach to rank LMF of greatest concern from a global microbiological food safety perspective.

 To provide a comprehensive report on the

available information and ranking results for use by Codex and member countries.

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SLIDE 3

RANKING OF LMF

Flow cha chart of f the he steps eps i inv nvolved in n the he da data co collection a and r nd rank nking exe xerc rcis ise

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SLIDE 4

SCOPE OF THE WORK

Catego egory Food

  • ds include

ded Cereals an and Grai ains whole and milled grains , rice and rice products, cereals and cereal products Confections s an and sn snac acks cocoa and chocolate products, other confections/confectionery, snacks, yeast Dried fruits an and veg eget etables dried fruits, dried vegetables, dried/dehydrated mushrooms dried seaweed Dried p ed protei ein p produ ducts dried dairy products, dried egg products, dried meat other than sausages/salamis/jerky (e.g. meat powders, gelatine, fish) Honey an and preserves honey, jams, syrups (e.g. corn syrup) Nuts an and nut p products tree nuts, peanuts and peanut products, mixed and unspecified nuts Seeds f for

  • r co

consumption

  • n

sesame seeds, tahini, halva/helva, other and unspecified seeds Spi Spices, dr dried h her erbs and d te teas as fruit/seed-based, root-based, leaf-based, bark/flower-based mixed/unspecified, tea (e.g. herbal, black teas) Specia ializ lized nutritio ional l product cts lipid based nutrient supplements, dried/powdered nutrient supplements

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SLIDE 5

SCOPE - NOTE

 Dried protein products ฀ excluded cured, fermented meat and fish products ฀ Retained dried fish / seafood fish flour/meal in review ฀ Only products with consistent Aw of <0.85 ฀ Excluded powdered infant formula  Spices, dried herbs and teas ฀ Included tea based on feedback of 45th CCFH  Honey and preserves – eventually excluded  Lipid based RUF for malnourished populations –

excluded from ranking but considered relevant to general code of hygienic practice

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SLIDE 6

MICROORGANISMS

 Bacillus cereus,  Clostridium botulinum,  Clostridium perfringens,  Cronobacter spp.,  pathogenic Escherichia coli  Listeria monocytogenes  Salmonella spp.,  Staphylococcus aureus  EB an generic E.coli

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SLIDE 7

KNOWLEDGE SYNTHESIS (RESULTS)

Summary of the burden o

  • f illne

ness r related to LMF outbreaks a attribut uted to

  • se

select m microbial h haz azar ards

% ( (count unt) Ou Outbr breaks Cases es Hospit italiz lizatio ions Deaths hs Salmonella spp. 44.9% (96) 43.8%(12415) 88.6% (895) 73.7% (14)

  • E. coli

2.3% (5) 1.2% (354) 3.3% (33) 5.3% (1)

  • B. cereus

25.7% (55) 3.7% (1057) 1.4% (14) 0% (0)

  • C. botulinum

15.0% (32) 0.3% (84) 6.0% (61) 21.1% (4)

  • C. perfringens

4.7% (10) 1.5% (432) 0% (0) 0% (0)

  • S. aureus

7.5% (16) 49.4% (14006) 0.7% (7) 0% (0)

  • L. monocytogenes

0% (0) 0% (0) 0% (0) 0% (0) Cronobacter spp. 0% (0) 0% (0) 0% (0) 0% (0) Enterobacteriaceae 0% (0) 0% (0) 0% (0) 0% (0)

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SLIDE 8

NUMBER OF LMF OUTBREAKS IN EACH CATEGORY,

GROUPED BY SIZE AND MICROBIAL HAZARD

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SLIDE 9

Average prevalence nce o

  • f

Salmone nella spp. pp. ac acros

  • ss

s al all L LMF product uct categor

  • ries

Knowl wledge sy synthesi sis s (resul ults)

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SLIDE 10

RANKING CRITERIA

 Extent of food borne illness – outbreak data  International trade – FAOSTAT  Consumption ฀ Daily consumption (Individual food consumption data) ฀ % vulnerable consumers (as above) ฀ potential for consumer to increase risk (Expert opinion)  Production ฀ Prevalence of pathogen (systematic review) ฀ Proportion not subject to kill step risk (Expert opinion) ฀ Potential for post process contamination risk (Expert opinion)

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SLIDE 11

RANKING OF LMF RANKING CRITERIA

Crit iteria ia Sub-Crit iteria ia Attr ttribute Source of f info formation /ev /evidence

C1: I Internat ational al T Trad ade

  • Export value in US$ billions/year

FAOSTAT Trade data (http://faostat3.fao.org/)

C2: B Bur urden o n of f Disease

  • Total DALYs in outbreak cases from 1990
  • nwards

Systematic/scoping review (Appendix 1) and Published DALY data (Appendix 5)

C3: V Vuln lnerabilit ilitie ies due to F Food C Cons nsump umption C3.1: A Aver erage ge Servi ving

Average g/day FAO/WHO Chronic Individual Food Consumption Database Summary Statistics (CIFOCOSS) (Appendix 6)

C3.2: P Prop ropor

  • rtion
  • n

Vuln lnerable le Cons nsume umers

Proportion (0-100%) consumed by vulnerable groups (toddlers and elderly) FAO/WHO Chronic Individual Food Consumption Database Summary Statistics (CIFOCOSS) (Appendix 6)

C3.3: P Pote tenti tial for C Consume umer Mis ishan andlin ling

Proportion (0-100%) of LMF products in a given category with an increased risk as a result of mishandling/poor practices at any time between final retail and consumption (see Appendix 7 for details) Expert opinion

C4: V Vuln lnerabilit ilities due to F Food

  • d P

Prod

  • duction
  • n

C4.1: I Increa eased ed Ri Risk o k of Contam aminat atio ion

Proportion (0-100%) of LMF products in a given category with an increased risk of contamination post kill step (see Appendix 7for details) Expert opinion

C4.2: P Prop roportion

  • n

wit ithout K Kill ill Step

Proportion (0-100%) of LMF in a given category without a kill step prior to retail and distribution (see Appendix 7 for details) Expert opinion

C4.3: P Prevalence nce

  • f Pa

Pathogen

Probability that a LMF is contaminated at a level with any pathogens with the potential to cause illness in consumers Systematic/scoping review (Appendix 1)

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SLIDE 12

RANKING OF LMF

RESULTS OF SCORES FOR EACH CATEGORY – BURDEN OF DISEASE

C2: B Burden of D Dis isease Code Category Name Total DALYs in

  • utbreak cases

from 1990 to 2014 Normalised Impact (v2) [Dis-Value] Cat Cat 1 1 Cereals and Grains 72.53 45.9 Cat Cat 2 2 Confections and Snacks 60.26 35.4 Cat Cat 3 3 Dried Fruits and Vegetables 32.78 12.2 Cat Cat 4 4 Dried Protein Products 136.44 100.0 Cat Cat 5 5 Nuts and Nut Products 118.51 84.8 Cat Cat 6 6 Seeds for Consumption 18.42 0.0 Cat Cat 7 7 Spices, Dried Herb and Tea 80.71 52.8

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SLIDE 13

RANKING OF LMF

RESULTS OF SCORES FOR EACH CATEGORY – INTERNATIONAL TRADE

C1: I Intern rnati tional T Trade Code Category Name Export value [US$ billions/year] Normalised Impact (v1) [Dis-Value] Cat Cat 1 1 Cereals and Grains 118. 118.59 594 100.0 Cat Cat 2 2 Confections and Snacks 58.124 48.5 Cat Cat 3 3 Dried Fruits and Vegetables 15.211 12.0 Cat Cat 4 4 Dried Protein Products 22.800 18.4 Cat Cat 5 5 Nuts and Nut Products 20.338 16.3 Cat Cat 6 6 Seeds for Consumption 1.150 0.0 Cat Cat 7 7 Spices, Dried Herb and Tea 14.938 11.7

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SLIDE 14

RANKING OF LMF

RESULTS OF SCORES FOR EACH CATEGORY - CONSUMPTION

C3.1: Aver erage S ge Serving C3.2 2 - Vulnerabl ble e Cons nsume umers C3.3 3 - Consume umer M Mishandling ng Cod

  • de

Category Name Average g/day Normalised Impact (v3.1) [Dis-Value] Proportion (0-100%) consumed by vulnerable groups: toddlers and elderly Normalised Impact (v3.2) [Dis-Value] Proportion (0-100%)

  • f LMF products in a

given category with an increased risk as a result of mishandling/poor practices at any time between final retail and consumption* Normalised Impact (v3.3) [Dis-Value] Cat at 1 1 Cereals and Grains 185. 85.0 100. 00.0 14.9 10.6 20 75.0 Cat at 2 2 Confections and Snacks 67.4 36.1 12.7 0.0 5 0.0 Cat at 3 3 Dried Fruits and Vegetables 21.1 10.9 16.0 15.9 5 0.0 Cat at 4 4 Dried Protein Products 1.1 0.0 33. 33.5 100. 00.0 25 25 100. 00.0 Cat at 5 5 Nuts and Nut Products 2.1 0.5 19.8 34.1 5 0.0 Cat at 6 6 Seeds for Consumption 5.5 2.4 12.7 0.0 5 0.0 Cat at 7 7 Spices, Dried Herb and Tea 4.4 1.8 13.9 5.8 15 50.0

*scores based on experts' opinion

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SLIDE 15

RANKING OF LMF

RESULTS OF SCORES FOR EACH CATEGORY - PRODUCTION

C4.1 1 - Incre reased R Risk of

  • f

Contam aminat atio ion C4.2 .2 - Prop ropor

  • rtion
  • n Withou
  • ut K

Kill Step C4.3 .3 - Prevalence nce o

  • f Patho

hogens Cod

  • de

Category Name Proportion (0- 100%) of LMF products in a given category with an increased risk of contamination post kill step* Normalised Impact (v4.1) [Dis-Value] Proportion (0-100%)

  • f LMF products in a

given category not subject to a kill step (see definition below) prior to retail and distribution* Normalised Impact (v4.2) [Dis-Value] Presence of contamination (log10 cfu/g) Normalised Impact (v4.3) [Dis-Value] Cat at 1 1 Cereals and Grains 14.55 15.2 85 85 100. 00.0 3.94 29.0 Cat at 2 2 Confections and Snacks 40 40 100. 00.0 20 13.3 2.21 13.1 Cat at 3 3 Dried Fruits and Vegetables 10 0.0 70 80.0 4.84 37.3 Cat at 4 4 Dried Protein Products 20 33.3 10 0.0 2.54 16.2 Cat at 5 5 Nuts and Nut Products 10.5 1.7 50 53.3 0.78 0.0 Cat at 6 6 Seeds for Consumption 10 0.0 75 86.7 2.07 11.8 Cat at 7 7 Spices, Dried Herb and Tea 10 0.0 75 86.7 11. 11.67 100. 00.0

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SLIDE 16

OVERALL RANKING

Code Cat Category N Nam ame C1 C1 - International Tr Trade ( (v1) C2 C2 - Burd rden o

  • f

Disea ease ( e (v2) C3 C3 - Food Consump mption (v3) C4 C4 - Food d Product ction (v4) Overall Impact ( t (V) ) [dis-va value] Ranking

  • rd

rder Cat Cat 1 1 Cereals and Grains 100.0 45.9 57.9 50.0

58. 58.3 1

Cat Cat 2 2 Confections and Snacks 48.5 35.4 15.7 29.7

32. 32.4 5

Cat Cat 3 3 Dried Fruits and Vegetables 12.0 12.2 11.6 44.4

21.0 .0 6

Cat Cat 4 4 Dried Protein Products 18.4 100.0 56.5 14.0

54. 4.5 2

Cat Cat 5 5 Nuts and Nut Products 16.3 84.8 15.1 18.1

42 42.0 4

Cat Cat 6 6 Seeds for Consumption 0.0 0.0 1.0 34.5

9.8 7

Cat Cat 7 7 Spices, Dried Herb and Tea 11.7 52.8 9.8 76.5

44. 44.6 3

Norma malised W Weights W1 = 16.7% W2 = 37.0% W3 = 18.5% W4 = 27.8% 100.0%

The overall normalised impact (V) of a LMF category a is thus given by the following formula: V(a (a) = = w1 v1(a (a) + + w2 v v2(a (a) + + w3 v v3(a (a) + + w4 v v4(a (a) (w (w1

1 +

+ w2

2 + w

+ w3

3 +

+ w4

4 =

= 1) 1)

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SLIDE 17

RANKING OF LMF

ROBUSTNESS ANALYSIS

 Sensitivity analysis – robustness of ranking ฀ Using these criteria Cereals and grains or dried protein

products were always in the top 2

 The ranking was quite robust to changes of priorities,

with either Category 1 or Category 4 always being on the top positions.

 Significant variability in the quality and quantity of data

for prevalence and illness

 Disease data -outbreak data, DALUS calculated based

  • n this and disability factors for the pathogens of

concern

 Ranking – only as good as the data available at the

time

 Very diverse categories – may need to be sub-divided

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SLIDE 18

SPICES, DRIED AROMATIC HERBS AND TEAS

 Sub- ranking with a focus on risk – relative ranking  Considered factors influencing prevalence and level of

microbial contamination

 Given diversity of industry not appropriate to focus on

a single commodity

 Scenario based approach – type of spice, level of

hygienic control and application of a microbial inactivation step

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SLIDE 19

PRELIMINARY RANKING IN TERMS OF RISK OF

CONTAMINATION

Upper ranking Fruit/berry: poorly controlled + no treatment, well controlled + no treatment Root: poorly controlled + no treatment, poorly controlled + delicate treatment Middle-upper rank Inner bark: poorly controlled + no treatment, poorly controlled + delicate treatment Fruit/berry: poorly controlled + strong treatment Root: moderately controlled + no treatment Seed: poorly controlled + no treatment

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SLIDE 20

PRELIMINARY RANKING IN TERMS OF RISK OF

CONTAMINATION

Middle- low ranking Inner bark: well controlled + no treatment Fruit/berry: well controlled + no treatment (black pepper) Root: moderately controlled + delicate product treatment Leaf: moderately controlled + no treatment, moderately controlled + delicate product treatment Seed: poorly controlled + strong treatment, well controlled + no treatment Low ranking Inner bark: well controlled + delicate product treatment Fruit/berry: well controlled + strong treatment Seed: well controlled + treatment

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SLIDE 21

MICROBIOLOGICAL CRITERIA

 n=10 (25g analytical samples), c=0  Noted low levels of contamination – considered

data from literature based on port of entry testing (-3.5 log units) and a within lot standard devia

 tion of 0.5

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SLIDE 22