ILTV strains | Proportion of chickens infected with ILTV (%)* | |||
---|---|---|---|---|
Eye drop | In-contact | Shared airspace | Total | |
A20 | 7/7 (100)a | 7/7 (100)a | 4/15 (27)bA | 18/29 (62)A |
Serva | 8/8 (100) | 8/8 (100) | 16/16 (100)B | 32/32 (100)B |
Class 9 | 8/8 (100) | 8/8 (100) | 15/15 (100)B | 31/31 (100)B |
Total | 23/23 (100) | 23/23 (100) | 35/46 (76) | 81/92 (88) |
Factor | P value | |||
ILTV strain | < 0.0001 | |||
Mode of exposure | 0.0019 |