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Table 3 Microbiological quality of milk samples along the DVC according to the guideline interpretation of results of specific food-borne pathogens in RTE foods (CFS, 2014)

From: Bacterial hazard identification and exposure assessment of raw milk consumption in Jimma zone, South West Ethiopia

Microbiological quality guideline category

Guideline limits

% microbiological quality along the DVC

Farms

Distributers

Retailers

cfu ml−1

n = 50

n = 50

n = 50

E. coli

 SA

 < 20

72

64

56

 BL

20—≤ 102

0

0

0

 US

 > 102

28

36

44

Salmonella

 SA

n.d. in 25 ml

86

78

76

 BL

N/A

-

-

-

 US

d. in 25 ml

14

22

24

S. aureus

 SA

 < 20

68

64

52

 BL

20—≤ 104

18

6

0

 US

 > 104

14

30

48

L. monocytogenes

 SA

 < 10

98

94

92

 BL

10—≤ 102

0

0

0

 US

 > 102

2

6

8

Campylobacter

 SA

n.d. in 25 ml

100

96

100

 BL

N/A

-

-

-

 US

d. in 25 ml

0

4

0

  1. RTE Ready-to Eat, DVC Dairy value chain, SA Satisfactory, BL Boarder line, results indicating the upper limit of acceptability and potential development of unacceptable risk, US Unsatisfactory, results indicating potentially injurious level to health and/or unfit for human consumption, N/A Not applicable