Table 2.
Antibody patterns in 50 confirmed blood donors: comparison between true positive WNV- and true positive USUV-positive blood donors.
| Serological Patterns | True Positive WNV WNV IgM+, IgG+, NT+ |
True Positive USUV USUV IgM+, IgG+, NT+ |
p-Value (Fisher’s Exact Test) |
|---|---|---|---|
| USUV IgM-, IgG-, NT- | 15 | 0 | <0.0001 * |
| USUV IgM+, IgG+, NT+ | 6 | 0 | 0.0223 * |
| USUV IgM-, IgG+, NT+ | 4 | 0 | 0.1099 |
| WNV IgM-, IgG-, NT- | 0 | 7 | 0.0096 * |
| WNV IgM+, IgG+, NT+ | 0 | 8 | 0.0040 * |
| WNV IgM-, IgG+, NT+ | 0 | 10 | 0.0006 * |
| Total | 25 | 25 |
Abbreviations: WNV: West Nile Virus; USUV: Usutu Virus; NT: neutralization; p-value was calculated using Fisher’s exact test; * p-value significant.