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Table 2 Serological analysis of Egyptian serum samples from small ruminants, buffalos and camels with cELISA (ID Vet Screen Rift Valley Fever competition ELISA (multispecies), indirect immunofluorescence assay (IIFA) and virus neutralization test (VNT) (A) Results grouped into species. Result conclusion (B). Detailed prevalence of herds is shown in part (C)

From: Seroprevalence of Rift Valley fever virus in livestock during inter-epidemic period in Egypt, 2014/15

(A)

 

ID screen® multispecies competition ELISA

Virus neutralization test

 

Immunofluorescence

 

Species

Tested

Positive

Doubtful

Negative

Tested

Positive

Negative

Tested

Positive

Doubtful

Negative

Sheep

417

3

1

413

381

0

381

88

3

3

82

Goat

26

0

0

26

26

0

26

n.t.

n.t.

n.t.

n.t.

Buffalo (small holder)

78

8

0

70

56

2

54

32

8

0

24

Buffalo (farms)

95

1

0

94

88

0

88

16

0

0

16

Camels abattoir

1

1

0

0

59

6

53

71

2

0

69

Camels imported from Sudan

130

0

0

130

121

0

121

20

0

0

20

Total:

747

13

1

733

731

8

723

227

13

3

211

(B)

Result conclusion

animals in the herds

tested

positive

inconclusive

negative

prevalence

(%)

95% CI

    

Sheep

440

438

2

1

435

0.46

0.41–0.5

    

Goat

17

26

0

0

26

0.00

0.00–0.00

    

Buffalo (small holder)

91

88

11

0

77

12.5

11.25–13.75

    

Buffalo (farm)

1200

100

0

0

100

0.00

0–2.83

    

Came l (abattoir)

 

71

7

0

64

9.86

2.92–16.79

    

Imported camel

 

150

0

0

150

0.00

0.00–0.00

    

(C)

Results in individual herds

animals in the herds

tested

positive

prevalence

(%)

95% C I

      

sheep herd 4

78

78

1

1.28

1.28–1.28

      

sheep herd 5

42

40

1

2.5

1.44–3.56

      

buffalo small holder 1

33

31

6

19.35

15.93–22.78

      

buffalo small holder 2

9

9

2

22.22

22.22–22.22

      

buffalo small holder 3

22

21

3

14.29

11.09–17.48

     Â