Table 1 Timeline for the transmission trial

Step 1

A

0

Direct infection of Inoculation pigs

1

0

Sample, transfer Inoculation pigs; introduce naïve Shedder pigs

2

1

–

B

3

2

–

4

3

–

5

4

–

6

5

Sample Inoculation and Shedder pigs

Step 2

A

7

6

0

Transfer infected Shedder pigs; introduce naïve Contact pigs

8

7

1

Sample Shedder pigs

9

8

2

Sample Contact pigs

10

9

3

Sample Shedder pigs

11

10

4

–

12

11

5

–

13

12

6

–

B

14

13

7

Remove Shedder pigs; sample Shedder & Contact pigs

15

14

8

–

16

15

9

–

17

16

10

Sample Contact pigs

18

17

11

Termination of trial