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The IBV vaccine strains used as a reference in this study.
| Vaccine ID | Commercial name | IBV strain |
|---|---|---|
| 1V | IB Mass | Mass 41 |
| 2V | IB 4/91 | 4/91 (793/B) |
| 3V | IB 88 | CR 88 variant strain (close to 793/B) |
| 4V | CEVAC I BIRD | 1\96 (close to 793/B) |
| 5V | Cevac Brone 120 l | H 120 |
IB: Infectious bronchitis, IBV: IB virus
