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| Serological profile | Total no. of samples | PCR positivity rate (no. of positive samples) |
|---|---|---|
| Seropositive | 292 | 70.5% (n = 206) |
| RPR-negative, treponemal test-positive | 60 | 75% (n = 45) |
| RPR-positive, treponemal test-negative | 6 | 66.7% (n = 4) |
| Seronegative | 6 | 66.7% (n = 4) |
