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Table 2 Frequency of IAV shedding in nursery pigs in two longitudinal studies stratified by sow source

From: Longitudinal study of influenza A virus circulation in a nursery swine barn

N detectionsa

Source 1

Source 2

Source 3

Source 4

Source 5

Total N

Total %

(95% CI)

Study 1

 0

0

0

0

0

0

0

0.0

 

 1

0

12

4

15

7

38

46.9

(35–58)

 2

7

1

6

0

2

16

19.7

(11–30)

 3

9

2

8

0

6

25

30.8

(21–42)

 4

2

0

0

0

0

2

2.4

(1–8)

 Totalb

18

15

18

15

15

81c

100.0c

 

N detectionsa

Source 1

Source 2

Source 3

Source 4

Source 5

Total N

Total %

(95% CI)

Study 2

 0

4

6

4

4

9

27

36.0

(25–47)

 1

6

4

10

10

6

36

48.0

(36–59)

 2

4

5

1

1

0

11

14.6

(7–24)

 3

1

0

0

0

0

1

1.3

(1–7)

 4

0

0

0

0

0

0

0.0

 

 Totalb

15

15

15

15

15

48c

64.0c

(52.1–74.8)c

  1. aNumber of times that virus was isolated from individual nursery pigs.
  2. bTotal number of pigs included in the study by sow source.
  3. cRepresents number of pigs that were positive at least once in the study. May not be a sum of this column or row.
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Veterinary Research

ISSN: 1297-9716