Table 2 Number of chickens affected with pneumonia or peri-bronchitis associated lesions at different time points post inoculation (hpi).

4

8

16

24

4

8

16

24

2

0**

1**

3**

5

2*

4*

5*

2

1*

2**

1**

4*

3*

5*

2

1

0**

2**

5*

2

2*

6

4*

1**

0*

3

6

3*

3

6

3