Volume 10, Number 8—August 2004
Research
Predicting Antigenic Variants of Influenza A/H3N2 Viruses
Table 2
Antigenic distance (upper right) and number of amino acid changes in the HA1 (lower left) in 55 pairwise comparisons among 11 influenza H3N2 viruses
Virus IDa | H3N2 virus |
|||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | G | H | I | J | K | ||||||||
A. HK/71 |
27.7 |
19.6 |
39.2 |
55.4 |
39.2 |
48.0 |
39.2 |
110.9 |
67.9 |
110.9 |
||||||||
B. ENG/72 |
15 |
4.0 |
26.1 |
16.0 |
64.0 |
156.8 |
4.0 |
64.0 |
78.4 |
181.0 |
||||||||
C. PC/73 |
16 |
7 |
8.0 |
16.0 |
32.0 |
27.7 |
22.6 |
37.0 |
55.4 |
90.5 |
||||||||
D. MC/75 |
21 |
12 |
12 |
9.2 |
32.0 |
45.3 |
32.0 |
90.5 |
55.4 |
90.5 |
||||||||
E. VIC/75 |
30 |
19 |
19 |
15 |
11.3 |
27.7 |
1.9 |
5.7 |
78.4 |
128.0 |
||||||||
F. TOK/75 |
20 |
17 |
18 |
16 |
20 |
78.4 |
45.3 |
26.1 |
39.2 |
90.5 |
||||||||
G. ENG/75 |
27 |
18 |
17 |
8 |
17 |
22 |
32.0 |
4.6 |
6.9 |
19.6 |
||||||||
H. AC/76 |
31 |
20 |
18 |
16 |
6 |
21 |
19 |
9.2 |
78.4 |
73.9 |
||||||||
I. VIC/76 |
32 |
21 |
19 |
17 |
2 |
22 |
19 |
4 |
27.7 |
32.0 |
||||||||
J. BAN/1/79 |
36 |
25 |
23 |
21 |
24 |
33 |
17 |
26 |
26 |
9.2 |
||||||||
K. BAN/2/79 | 36 | 24 | 24 | 22 | 26 | 33 | 20 | 28 | 28 | 3 |
aID, identification.