From: Different immune responses to three different vaccines following H6N1 low pathogenic avian influenza virus challenge in Taiwanese local chicken breeds
Hsin-Yi
Ju-Chi
Hua-Tung
Quemoy
Shek-Ki
Nagoya
SPF
Control group
31
25
23
42
9
15
12
Challenge group
27
28
49
22
Total size
62
52
51
91
21
37
24
Mortality*
7
1
0
Mortality rate (%)
22.6
3.7
3.6
8.3