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Table 1 Number of infected and contact birds showing clinical disease signs

From: Infectivity and transmissibility of H9N2 avian influenza virus in chickens and wild terrestrial birds

Species

Broiler chickens

Layers

Jungle fowl

Quail

Sparrows

Crows

Clinical signs

Infected (10)

Contact (5)

Infected (10)

Contact (5)

Infected (10)

Contact (5)

Infected (10)

Contact (5)

Infected (10)

Contact (5)

Infected (10)

Contact (5)

General sickness/

8

5

10

5

8

5

10

5

9

5

-

-

Sneezing

8

1

8

4

8

2

7

4

10

-

-

-

Respiratory sound (rales)

6

1

8

4

-

-x

7

2

10

2

-

-

Occular/nasal discharge

8

1

6

4

-

-

-

-

10

2

-

-

Eye redness

8

2

8

3

-

-

-

-

10

2

-

-

Head Swollen

6

2

7

4

-

-

6

2

6

3

-

-

Ruffled Feathers

6

2

10

5

8

2

10

2

10

-

2

-

Reluctant to move

6

2

4

4

-

-

-

-

6

2

-

-

  1. Infected birds were inoculated with 106.6 EID50 UDL-01/08 virus. Clinical signs were observed between 2–5 dpi. The number in parentheses is the total number of birds in a group. (-), indicates no apparent clinical disease signs.