Age | Virus | Number of dead/total (MDT) | OP shedding: number of birds shedding/total (Log 10 EID 50 /mL) a | |||||||
---|---|---|---|---|---|---|---|---|---|---|
NDV | HPAIV | |||||||||
2 dpi | 3 dpi | 4 dpi | 7 dpi | 2 dpi | 3 dpi | 4 dpi | 7 dpi | |||
2 weeks old | HPAIV | 6/10 (1.6) | nd | nd | nd | nd | 5/7 (7.9 ± 3)A | 3/4 (1.9 ± 0.4)A | 0/4A | 0/4A |
mNDV | - | 9/10 (3.7 ± 0.3)A | 9/10 (3.7 ± 0.1)A | 10/10 (4.3 ± 0.3)A | 10/10 (4.8 ± 0.2)A | nd | nd | nd | nd | |
mNDV + HPAIV | 8/10 (2) | 4/4 (3.3 ± 0.6)A | 2/2 (4.1 ± 0.1)A | 2/2 (4.5 ± 0.4)A | 2/2 (3.8 ± 0.2)A | 3/4 (7.3 ± 2.9)A | 0/2A | 0/2A | 0/2A | |
mNDV + HPAIV 3 days later | 2/10 (7.0) | 10/10 (3.4 ± 0.3)A | 9/10 (3.6 ± 0.3)A | 9/9 (3.6 ± 0.3)A | 9/9 (4.8 ± 0.2)A | 0/10**B | 0/10*A | 1/9 (4.5)A | 1/9 (9.3)A | |
4 weeks old | HPAIV | 8/10 (3.5) | nd | nd | nd | nd | 8/9 (7.1 ± 0.9)A | 0/5A | 4/4 (3.3 ± 0.8)A | 0/2A |
mNDV | - | 10/10 (3.5 ± 0.2)A | 8/8 (3.5 ± 0.2)A | 8/8 (3.8 ± 0.3)A | 8/8 (4.7 ± 0.2)A | nd | nd | nd | nd | |
mNDV + HPAIV | 8/10 (2.1) | 3/5 (2.7 ± 0.5)A | 2/2 (3 ± 0.9)A | 2/2 (2.9 ± 0.7)A | 2/2 (3.6 ± 0.8)A | 3/5 (6.6 ± 1.7)A | 0/2A | 0/2A | 0/2A | |
mNDV + HPAIV 3 days later | 1/10 (9.0) | 9/10 (3.9 ± 0.3)A | 8/10 (3.4 ± 0.4)A | 9/10 (3.5 ± 0.3)A | 10/10 (4.5 ± 2.1)A | 0/10***B | 0/10 A | 0/10***A | 1/10 (10)A |