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Table 1 Clinical examination of Muscovy and Pekin ducks after challenge with H7 viruses

From: Virulence of three European highly pathogenic H7N1 and H7N7 avian influenza viruses in Pekin and Muscovy ducks

Group

Species

Challenge route

Virus

Morbidity (%)

Mortality (%)

MDT (range)

PI

1

Muscovy

IC

H7N7-FPV27

10/10 (100%)

2/10 (20%)

7 (7)

0.8

2

Muscovy

IC

H7N1-FPV34

10/10 (100%)

8/10 (80%)

5.4 (4–7)

1.8

3

Muscovy

IC

H7N1-It99

7/10 (70%)

2/10 (20%)

6.5 (6–7)

0.5

4

Muscovy

IM

H7N1- It99

9/9 (100%)

6/9 (66.7%)

5.7 (5–8)

1.4

5

Pekin

IC

H7N1- It99

6/10 (60%)

5/10 (50%)

5 (5)

0.9

6

Pekin

IM

H7N1- It99

8/10 (80%)

5/10 (50%)

6 (5–7)

0.9

  1. Range refers to the day of first and last mortality
  2. IC intrachoanal, IM intramuscular, MDT mean death time per day calculated for dead birds, PI Pathogenicity index