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Table 2 Virus titers in trachea or lung tissues of infected chickens

From: Pathogenicity of reassortant H9 influenza viruses with different NA genes in mice and chickens

Groups

3 dpi

5 dpi

Lung

Trachea

Lung

Trachea

rH9N1

1/3a (4.25)

3/3 (4.5 ± 0.90b)

0/3

3/3 (2.5 ± 0.00)

H9N2

2/3 (3.75 ± 0.71)

3/3 (4.5 ± 0.00)

3/3 (3.58 ± 0.14)

3/3 (4.42 ± 0.14)

rH9N3

1/3 (1.5)

1/3 (3.5)

2/3 (3.25c)

2/3 (2.25c)

  1. aThe number of chickens positive for virus isolation out of the total number of chickens on the days indicated.
  2. bThe virus titers presented by log10 mean ± SEM EID50/100 mg among positive samples.
  3. cTwo chickens shed virus, one of them has titer below the detection limit.