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Study design showing groups, vaccine, and vaccination regimesa
| IBV vaccine (dosage/chick in 100 μl) | Group I |
Group II |
Group III |
|||
|---|---|---|---|---|---|---|
| Day 0 | Day 14 | Day 0 | Day 14 | Day 0 | Day 14 | |
| H120 (3.5 log10 EID50) | √ | √ | ||||
| CR88 (4.25 log10 EID50) | √ | √ | √ | |||
| Sterile water | √ | √ | ||||
At 28 days of age, 10 chicks from each group were challenged with a virulent IBV Q1.
