Table 3 Statistics of chickens challenged with MDV SD 2012-1 isolate
From: Isolation and analysis of a very virulent Marek’s disease virus strain in China
Group | Bird number | Death with tumor | Tumor lesion | Total (%) |
|---|---|---|---|---|
no vaccine | 30 | 9 | 13 | 22 (70.3%) |
HVT | 30 | 8 | 12 | 20 (66.7%) |
HVT + SB1 | 30 | 8 | 10 | 18 (60%) |