|
Viral antigens
|
Antibody titers using HI testa
|
% (No. of positive samples/total no.)
|
|---|
|
≤1:20
|
1:40
|
1:80
|
1:160
|
1:320
|
1:640
|
1:1280
|
|---|
|
H5N1(RE-5)
|
550
|
8
|
2
|
0
|
0
|
0
|
0
|
1.8 % (10/560)
|
|
H5N1(RE-7)
|
524
|
36
|
0
|
0
|
0
|
0
|
0
|
6.4 % (36/560)
|
|
H9N2 (A/chicken/Shanghai/10/01)
|
294
|
64
|
80
|
74
|
30
|
16
|
2
|
47.5 % (266/560)
|
|
H9N2(A/Chicken/Hebei/4/2008)
|
306
|
80
|
76
|
55
|
26
|
15
|
2
|
45.4 % (254/560)
|
|
H7N9(A/Pigeon/Shanghai/S1069/2013)
|
560
|
0
|
0
|
0
|
0
|
0
|
0
|
0(0/560)
|
-
aThe HI titer was expressed as the reciprocal of the highest serum dilution that completely inhibited hemagglutination of 4 HA units of the virus. HI titers ≥ 1:40 was considered to be positive
