Table 2.
Marek’s disease (MD) incidence, mortality, and tumor rates in each group at 90 dpc.
| Vaccine | Challenge | MD Incidence Diseased/Total (%) | PI | Mortality Deaths/Total (%) | Tumor Incidence a |
|---|---|---|---|---|---|
| None | None | 0/14 (0%) | - | 0/14 (0%) | 0% |
| None | Md5 | 15/15 (100%) | - | 12/15 (80.0%) | 40.0% |
| CVI988 | Md5 | 1/14 (7.1%) | 92.9 | 0/14 (0%) | 0% |
| 814 | Md5 | 0/13 (0%) | 100 | 0/14 (0%) | 0% |
| None | BS/15 | 14/14 (100%) | - | 12/14 (85.7%) | 64.3% |
| CVI988 | BS/15 | 10/15 (66.7%) | 33.3 | 8/15 (53.3%) | 13.3% |
| 814 | BS/15 | 5/15 (33.3%) | 66.7 | 5/15 (33.3%) | 20.0% |
PI, protective index; a Percent of birds that developed tumors; dpc, days post-challenge.