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Comparison of rates of seropositivity in relationship to single versus multiple erythema skin lesions
| Serologic test | % Positive results among samples from patients with:
|
P valuea | |
|---|---|---|---|
| Single erythema migrans (n = 122) | Multiple erythema migrans (n = 53) | ||
| C6 ELISA | 59.0 | 88.7 | <0.001 |
| WCS ELISAb | 68.0 | 94.3 | <0.001 |
| Two-tier serology | 26.2 | 64.2 | <0.001 |
Calculated by Fisher's exact test.
The classification WCS ELISA positive includes both positive and indeterminate results.
