Table 1.
Antibody Titer | Number (%) of Samples |
---|---|
Immunofluorescence Antibody Test | |
<20 | 1 (1.7) |
80 | 21 (35.6) |
320 | 23 (39.0) |
1280 | 13 (22.0) |
5120 | 1 (1.7) |
Neutralization Antibody Test | |
10 | 2 (3.4) |
20 | 4 (6.8) |
40 | 6 (10.2) |
80 | 18 (30.5) |
160 | 11 (18.6) |
320 | 9 (15.3) |
640 | 5 (8.5) |
1280 | 2 (3.4) |
2560 | 2 (3.4) |