EIA index value | Western blot result (row percentage) | Total | ||
Negative | Indeterminate | Positive | ||
<0.9 | 775 (93.5%) | 23 (2.8%) | 31 (3.7%) | 829 |
0.9–1.1 | 33 (53.2%) | 11 (17.7%) | 18 (29.0%) | 62 |
1.2–2.4 | 98 (32.2%) | 38 (12.5%) | 168 (55.3%) | 304 |
2.5–3.4 | 32 (14.4%) | 13 (5.9%) | 177 (79.7%) | 222 |
≥3.5 | 48 (2.4%) | 24 (1.2%) | 1910 (96.4%) | 1982 |
EIA, enzyme immunoassay; HSV, herpes simplex virus.