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ELISA S/CO change between the index donation and follow-up samples from Brazilian seropositive donors according to BSRI PCR results.
| Level of Change in Antibody Reactivity (Index donation S/CO – Follow-up S/CO) |
PCR Positive (N=81) Number (%) |
PCR Negative (N=62) Number (%) |
|---|---|---|
| Increase greater than 1 | 16 (20%) | 4 (6%) |
| Increase less than 1, but greater than no change | 46 (57%) | 35 (56%) |
| No change or decrease less than 1 | 19 (24%) | 17 (27%) |
| Decrease greater than or equal to 1 | 0 | 6 (10%) |
